diff --git a/app/Http/Controllers/Admin/InformationController.php b/app/Http/Controllers/Admin/InformationController.php
index a44c017..fe5c447 100644
--- a/app/Http/Controllers/Admin/InformationController.php
+++ b/app/Http/Controllers/Admin/InformationController.php
@@ -236,7 +236,65 @@ class InformationController extends Controller
             ];
         }
 
-        return view('admin.information.dashboard', compact('totalStats', 'cityStats'));
+        // グラフ用データ: city_name と utilization_rate, waiting_count のみ
+        $cityStatsChart = [];
+        foreach ($cities as $city) {
+            $parkIds = DB::table('park')
+                ->where('city_id', $city->city_id)
+                ->pluck('park_id')
+                ->toArray();
+            
+            // park_standard と park_number の合計
+            $parkNumberStats = DB::table('park_number')
+                ->whereIn('park_id', $parkIds)
+                ->selectRaw('COALESCE(SUM(park_standard), 0) as total_standard, COALESCE(SUM(park_number), 0) as total_number')
+                ->first();
+            
+            $parkStandard = $parkNumberStats->total_standard ?? 0;
+            $parkNumber = $parkNumberStats->total_number ?? 0;
+            
+            // 利用率計算：floor((park_number / park_standard) * 100)
+            $utilizationRate = $parkStandard > 0 
+                ? (int) floor(($parkNumber / $parkStandard) * 100)
+                : 0;
+            
+            // 予約待ち人数
+            $waitingCount = 0;
+            if (!empty($parkIds)) {
+                $waitingQuery = DB::table('reserve')
+                    ->whereIn('park_id', $parkIds)
+                    ->where('valid_flag', 1)
+                    ->whereNull('contract_id');
+                
+                try {
+                    DB::table('reserve')
+                        ->select(DB::raw('1'))
+                        ->whereNotNull('reserve_cancel_flag')
+                        ->limit(1)
+                        ->first();
+                    
+                    $waitingQuery = $waitingQuery
+                        ->where(function ($q) {
+                            $q->whereNull('reserve_cancel_flag')
+                              ->orWhere('reserve_cancel_flag', 0);
+                        })
+                        ->whereNull('reserve_cancelday');
+                } catch (\Exception $e) {
+                    // キャンセルフラグが未運用
+                }
+                
+                $waitingCount = $waitingQuery->count();
+            }
+            
+            $cityStatsChart[] = [
+                'city_id' => $city->city_id,
+                'city_name' => $city->city_name,
+                'utilization_rate' => $utilizationRate,
+                'waiting_count' => $waitingCount,
+            ];
+        }
+
+        return view('admin.information.dashboard', compact('totalStats', 'cityStats', 'cityStatsChart'));
     }
 
     // ステータス一括更新（着手=2 / 対応完了=3）
diff --git a/resources/views/admin/information/dashboard.blade.php b/resources/views/admin/information/dashboard.blade.php
index d7a8630..af852d8 100644
--- a/resources/views/admin/information/dashboard.blade.php
+++ b/resources/views/admin/information/dashboard.blade.php
@@ -257,125 +257,189 @@
 @push('scripts')
 <script src="{{ asset('plugins/chart.js/Chart.min.js') }}"></script>
 <script>
-$(document).ready(function() {
-    // データテーブル初期化
-    $('#cityStatsTable').DataTable({
-        "language": {
-            "url": "//cdn.datatables.net/plug-ins/1.10.21/i18n/Japanese.json"
-        },
-        "pageLength": 10,
-        "order": [[ 6, "desc" ]], // 利用率で降順ソート
-        "columnDefs": [
-            { "orderable": false, "targets": 8 } // 操作列はソート無効
-        ]
-    });
+(function() {
+    // window.onload で全体を囲むことで、他の onload と競合しないようにする
+    window.onload = function() {
+        try {
+            console.log('[dashboard] start');
 
-    // 利用率チャート（円グラフ）
-    var ctxUtil = document.getElementById('utilizationChart').getContext('2d');
-    var utilizationChart = new Chart(ctxUtil, {
-        type: 'pie',
-        data: {
-            labels: [
-                @foreach($cityStats as $stat)
-                    '{{ $stat['city']->city_name }} ({{ $stat['utilization_rate'] }}%)',
-                @endforeach
-            ],
-            datasets: [{
-                label: '利用率',
-                data: [
-                    @foreach($cityStats as $stat)
-                        {{ $stat['utilization_rate'] }},
-                    @endforeach
-                ],
-                backgroundColor: [
-                    'rgba(255, 99, 132, 0.8)',
-                    'rgba(54, 162, 235, 0.8)',
-                    'rgba(255, 206, 86, 0.8)',
-                    'rgba(75, 192, 192, 0.8)',
-                    'rgba(153, 102, 255, 0.8)',
-                    'rgba(255, 159, 64, 0.8)',
-                    'rgba(199, 199, 199, 0.8)',
-                    'rgba(83, 102, 255, 0.8)',
-                    'rgba(255, 193, 7, 0.8)',
-                    'rgba(220, 53, 69, 0.8)',
-                    'rgba(108, 117, 125, 0.8)',
-                    'rgba(40, 167, 69, 0.8)'
-                ],
-                borderColor: [
-                    'rgba(255, 99, 132, 1)',
-                    'rgba(54, 162, 235, 1)',
-                    'rgba(255, 206, 86, 1)',
-                    'rgba(75, 192, 192, 1)',
-                    'rgba(153, 102, 255, 1)',
-                    'rgba(255, 159, 64, 1)',
-                    'rgba(199, 199, 199, 1)',
-                    'rgba(83, 102, 255, 1)',
-                    'rgba(255, 193, 7, 1)',
-                    'rgba(220, 53, 69, 1)',
-                    'rgba(108, 117, 125, 1)',
-                    'rgba(40, 167, 69, 1)'
-                ],
-                borderWidth: 2
-            }]
+            // DataTable 初期化
+            try {
+$('#cityStatsTable').DataTable({
+    pageLength: 10,
+    order: [[ 6, "desc" ]],
+    columnDefs: [
+        { orderable: false, targets: 8 }
+    ],
+    language: {
+        lengthMenu: " _MENU_ 件表示",
+        search: "検索:",
+        info: "_TOTAL_ 件中 _START_ から _END_ まで表示",
+        infoEmpty: "0 件中 0 から 0 まで表示",
+        infoFiltered: "（全 _MAX_ 件より抽出）",
+        paginate: {
+            first: "最初",
+            last: "最後",
+            next: "次",
+            previous: "前"
         },
-        options: {
-            responsive: true,
-            plugins: {
-                legend: {
-                    position: 'bottom',
-                    labels: {
-                        boxWidth: 12,
-                        padding: 10
-                    }
+        zeroRecords: "該当するデータがありません"
+    }
+});
+
+            } catch (e) {
+                console.error('[dashboard] DataTable error:', e);
+            }
+
+            if (typeof Chart === 'undefined') {
+                console.error('[dashboard] Chart.js is undefined（Chart.min.js が読めていない）');
+                return;
+            }
+            console.log('[dashboard] Chart.js version =', Chart.version || '(unknown)');
+
+            // ===== 数据（末尾カンマ回避）=====
+            var utilLabels = [
+                @foreach($cityStats as $stat)
+                    '{{ $stat['city']->city_name }}'@if(!$loop->last),@endif
+                @endforeach
+            ];
+            var utilData = [
+                @foreach($cityStats as $stat)
+                    {{ (int)$stat['utilization_rate'] }}@if(!$loop->last),@endif
+                @endforeach
+            ];
+
+            var waitLabels = [
+                @foreach($cityStats as $stat)
+                    '{{ $stat['city']->city_name }}'@if(!$loop->last),@endif
+                @endforeach
+            ];
+            var waitData = [
+                @foreach($cityStats as $stat)
+                    {{ (int)$stat['waiting_count'] }}@if(!$loop->last),@endif
+                @endforeach
+            ];
+
+            console.log('[dashboard] util labels/data len =', utilLabels.length, utilData.length);
+            console.log('[dashboard] wait labels/data len =', waitLabels.length, waitData.length);
+
+            function genBarColors(n, alpha) {
+                var colors = [];
+                for (var i = 0; i < n; i++) {
+                    var hue = Math.floor((360 / Math.max(n, 1)) * i);
+                    colors.push('hsla(' + hue + ',70%,55%,' + (alpha || 0.8) + ')');
+                }
+                return colors;
+            }
+
+            // ===== 利用率（bar）=====
+            var c1 = document.getElementById('utilizationChart');
+            if (!c1) {
+                console.error('[dashboard] utilizationChart not found');
+                return;
+            }
+
+            var utilConfigV2 = {
+                type: 'bar',
+                data: {
+                    labels: utilLabels,
+                    datasets: [{
+                        label: '利用率(%)',
+                        data: utilData,
+                        backgroundColor: genBarColors(utilData.length, 0.8),
+                        borderWidth: 1
+                    }]
                 },
-                tooltip: {
-                    callbacks: {
-                        label: function(context) {
-                            var label = context.label.split(' (')[0]; // 自治体名のみ取得
-                            var value = context.parsed;
-                            var total = context.dataset.data.reduce((a, b) => a + b, 0);
-                            var percentage = ((value / total) * 100).toFixed(1);
-                            return label + ': ' + value + '% (全体の' + percentage + '%)';
+                options: {
+                    responsive: true,
+                    maintainAspectRatio: false,
+                    legend: { display: false },
+                    tooltips: {
+                        callbacks: {
+                            label: function(tooltipItem) {
+                                return '利用率: ' + tooltipItem.yLabel + '%';
+                            }
                         }
+                    },
+                    scales: {
+                        xAxes: [{ ticks: { autoSkip: false, maxRotation: 60, minRotation: 60, fontSize: 10} }],
+                        yAxes: [{
+                            ticks: { beginAtZero: true, max: 100 },
+                            scaleLabel: { display: true, labelString: '利用率(%)' }
+                        }]
                     }
                 }
-            }
-        }
-    });
+            };
 
-    // 予約待ちチャート
-    var ctxWait = document.getElementById('waitingChart').getContext('2d');
-    var waitingChart = new Chart(ctxWait, {
-        type: 'doughnut',
-        data: {
-            labels: [
-                @foreach($cityStats as $stat)
-                    '{{ $stat['city']->city_name }}',
-                @endforeach
-            ],
-            datasets: [{
-                label: '予約待ち人数',
-                data: [
-                    @foreach($cityStats as $stat)
-                        {{ $stat['waiting_count'] }},
-                    @endforeach
-                ],
-                backgroundColor: [
-                    'rgba(255, 99, 132, 0.8)',
-                    'rgba(54, 162, 235, 0.8)',
-                    'rgba(255, 206, 86, 0.8)',
-                    'rgba(75, 192, 192, 0.8)',
-                    'rgba(153, 102, 255, 0.8)',
-                    'rgba(255, 159, 64, 0.8)',
-                    'rgba(199, 199, 199, 0.8)',
-                    'rgba(83, 102, 255, 0.8)'
-                ]
-            }]
-        },
-        options: {
-            responsive: true
+            // 旧实例があれば破棄（再描画で真っ白になる事故防止）
+            if (window._utilChart && window._utilChart.destroy) window._utilChart.destroy();
+            window._utilChart = new Chart(c1.getContext('2d'), utilConfigV2);
+            console.log('[dashboard] utilization chart rendered');
+
+            // ===== 予約待ち（bar）=====
+            var c2 = document.getElementById('waitingChart');
+            if (!c2) {
+                console.error('[dashboard] waitingChart not found');
+                return;
+            }
+
+            var waitConfigV2 = {
+                type: 'bar',
+                data: {
+                    labels: waitLabels,
+                    datasets: [{
+                        label: '予約待ち人数',
+                        data: waitData,
+                        backgroundColor: genBarColors(waitData.length, 0.8),
+                        borderWidth: 1
+                    }]
+                },
+                options: {
+                    responsive: true,
+                    maintainAspectRatio: false,
+                    legend: { display: false },
+                    tooltips: {
+                        callbacks: {
+                            label: function(tooltipItem) {
+                                return '予約待ち: ' + tooltipItem.yLabel + '人';
+                            }
+                        }
+                    },
+                    scales: {
+                        xAxes: [{ ticks: { autoSkip: false, maxRotation: 60, minRotation: 60, fontSize: 10} }],
+                        yAxes: [{
+                            ticks: { beginAtZero: true },
+                            scaleLabel: { display: true, labelString: '人数' }
+                        }]
+                    }
+                }
+            };
+
+            if (window._waitChart && window._waitChart.destroy) window._waitChart.destroy();
+            window._waitChart = new Chart(c2.getContext('2d'), waitConfigV2);
+            console.log('[dashboard] waiting chart rendered');
+
+        } catch (e) {
+            console.error('[dashboard] fatal error:', e);
         }
-    });
-});
+    };
+})();
 </script>
-@endpush
\ No newline at end of file
+
+<style>
+/* Chart.js v2 で maintainAspectRatio:false を使用する場合、canvas に固定高さが必要 */
+#utilizationChart, #waitingChart { height: 300px !important; }
+
+/* ページネーションボタン同士に余白を追加し、「前123次」のように詰まるのを防止 */
+.dataTables_wrapper .dataTables_paginate .paginate_button{
+    margin: 0 4px !important;
+    display: inline-block !important;
+}
+/* 現在ページボタンにも適度な内側余白を設定 */
+.dataTables_wrapper .dataTables_paginate .paginate_button{
+    padding: .2rem .55rem !important;
+}
+
+</style>
+@endpush
+