diff --git a/edc-web/app/routes/test_data.py b/edc-web/app/routes/test_data.py
index fbe2b27..72c551d 100644
--- a/edc-web/app/routes/test_data.py
+++ b/edc-web/app/routes/test_data.py
@@ -37,6 +37,19 @@ def api_test_data():
     })
 
 
+@bp.route("/api/test-data/chart")
+def api_chart_data():
+    """返回图表所需全部数据（不分页）"""
+    serial = request.args.get("serial", "", type=str)
+    date_from = request.args.get("date_from", "", type=str)
+    date_to = request.args.get("date_to", "", type=str)
+    test_mode = request.args.get("test_mode", "", type=str)
+    data_source = request.args.get("data_source", "", type=str)
+
+    records = get_all_test_data_for_export(serial, date_from, date_to,
+                                           test_mode, data_source)
+    return jsonify({"records": records, "total": len(records)})
+
 @bp.route("/api/test-data/export")
 def api_export():
     """导出测试数据为 CSV"""
diff --git a/edc-web/app/static/js/test_data.js b/edc-web/app/static/js/test_data.js
index a5c2089..67cd7bd 100644
--- a/edc-web/app/static/js/test_data.js
+++ b/edc-web/app/static/js/test_data.js
@@ -199,6 +199,157 @@ function exportCSV() {
     window.location.href = `/api/test-data/export?${params}`;
 }
 
+// ─── 图表 ────────────────────────────────────────
+
+let chartMode = false;
+let chartInstance = null;
+
+// 图表系列定义
+const CHART_SERIES = {
+    b2: [
+        { key: 'ppvalue',     name: '峰峰值',    unit: 'V',   yAxisIndex: 0 },
+        { key: 'idle_freq',   name: '开始频率',  unit: 'Hz',  yAxisIndex: 0 },
+        { key: 'enter_freq',  name: '进入频率',  unit: 'Hz',  yAxisIndex: 0 },
+        { key: 'exit_freq',   name: '离开频率',  unit: 'Hz',  yAxisIndex: 0 },
+        { key: 'enter_dist',  name: '进入距离',  unit: 'mm',  yAxisIndex: 1 },
+        { key: 'exit_dist',   name: '离开距离',  unit: 'mm',  yAxisIndex: 1 },
+        { key: 'enter_speed', name: '进入速度',  unit: 'dm/s',yAxisIndex: 2 },
+        { key: 'exit_speed',  name: '离开速度',  unit: 'dm/s',yAxisIndex: 2 },
+    ],
+    b4: [
+        { key: 'work_freq',     name: '工作频率',   unit: 'Hz',  yAxisIndex: 0 },
+        { key: 'curr_dist',     name: '当前距离',   unit: 'mm',  yAxisIndex: 1 },
+        { key: 'speed',         name: '速度',       unit: 'dm/s',yAxisIndex: 2 },
+        { key: 'near_dist',     name: '最近距离',   unit: 'mm',  yAxisIndex: 1 },
+        { key: 'far_dist',      name: '最远距离',   unit: 'mm',  yAxisIndex: 1 },
+        { key: 'b4_enter_dist', name: '进入高度',   unit: 'mm',  yAxisIndex: 1 },
+        { key: 'b4_leave_dist', name: '离开高度',   unit: 'mm',  yAxisIndex: 1 },
+    ],
+};
+
+function toggleChart() {
+    const container = document.getElementById('chart-container');
+    const btn = document.getElementById('btn-chart');
+    const table = document.getElementById('test-data-table');
+    const pagination = document.getElementById('pagination');
+
+    chartMode = !chartMode;
+    if (chartMode) {
+        container.style.display = 'block';
+        table.style.display = 'none';
+        pagination.style.display = 'none';
+        btn.textContent = '📋 表格';
+        btn.classList.add('active');
+        // 只对 B2/B4 视图显示图表
+        if (currentView === 'all') switchView('b2');
+        loadChart();
+    } else {
+        container.style.display = 'none';
+        table.style.display = '';
+        pagination.style.display = '';
+        btn.textContent = '📈 图表';
+        btn.classList.remove('active');
+        if (chartInstance) { chartInstance.dispose(); chartInstance = null; }
+    }
+}
+
+async function loadChart() {
+    const container = document.getElementById('chart-container');
+    if (!container || container.style.display === 'none') return;
+
+    const serial = document.getElementById('search-serial').value;
+    const dateFrom = document.getElementById('search-date-from').value;
+    const dateTo = document.getElementById('search-date-to').value;
+    const v = VIEWS[currentView];
+
+    // 全部视图不适用，用 B2 或 B4
+    const ds = v.data_source || (currentView === 'all' ? 'B2' : v.data_source);
+
+    const params = new URLSearchParams();
+    if (serial) params.set('serial', serial);
+    if (dateFrom) params.set('date_from', dateFrom);
+    if (dateTo) params.set('date_to', dateTo);
+    if (ds) params.set('data_source', ds);
+
+    let resp, data;
+    try {
+        resp = await fetch(`/api/test-data/chart?${params}`);
+        data = await resp.json();
+    } catch (e) {
+        console.error('加载图表数据失败:', e);
+        return;
+    }
+
+    const records = data.records || [];
+    if (!records.length) {
+        container.innerHTML = '<p style="text-align:center;color:#999;padding:100px;">暂无数据</p>';
+        return;
+    }
+
+    // 选系列定义
+    const seriesDef = CHART_SERIES[ds === 'B4' ? 'b4' : 'b2'] || CHART_SERIES.b2;
+
+    // 时间轴
+    const times = records.map(r => r.create_time);
+
+    // 构建 series
+    const series = seriesDef.map(def => ({
+        name: `${def.name}(${def.unit})`,
+        type: 'line',
+        yAxisIndex: def.yAxisIndex,
+        symbol: 'circle',
+        symbolSize: 4,
+        data: records.map(r => r[def.key] ?? null),
+        connectNulls: false,
+    }));
+
+    // 渲染 ECharts
+    if (chartInstance) chartInstance.dispose();
+    chartInstance = echarts.init(container);
+
+    const option = {
+        title: {
+            text: ds === 'B4' ? '波动测试 (0xB4) 数据趋势' : '灵敏度测试 (0xB2) 数据趋势',
+            left: 'center',
+            textStyle: { fontSize: 14 },
+        },
+        tooltip: {
+            trigger: 'axis',
+        },
+        legend: {
+            type: 'scroll',
+            bottom: 0,
+        },
+        grid: { left: 60, right: 140, top: 60, bottom: 80 },
+        xAxis: {
+            type: 'category',
+            data: times,
+            axisLabel: {
+                formatter: v => fmtTime(v).substring(5, 16),  // MM-dd HH:mm
+                rotate: 30,
+            },
+        },
+        yAxis: [
+            { type: 'value', name: '频率/电压', nameTextStyle: { fontSize: 11 } },
+            { type: 'value', name: '距离(mm)',  nameTextStyle: { fontSize: 11 } },
+            { type: 'value', name: '速度(dm/s)',nameTextStyle: { fontSize: 11 },
+              offset: 80 },
+        ],
+        dataZoom: [
+            { type: 'slider', start: 0, end: 100, height: 20, bottom: 30 },
+            { type: 'inside' },
+        ],
+        series: series,
+    };
+
+    chartInstance.setOption(option);
+
+    // 窗口 resize 时自适应
+    window.addEventListener('resize', () => {
+        if (chartInstance) chartInstance.resize();
+    }, { once: false });
+}
+
 // ─── 初始加载 ────────────────────────────────────
 
 renderHead();
diff --git a/edc-web/app/templates/test_data.html b/edc-web/app/templates/test_data.html
index 2fd3d31..f42a065 100644
--- a/edc-web/app/templates/test_data.html
+++ b/edc-web/app/templates/test_data.html
@@ -31,8 +31,11 @@
             <option value="100">100</option>
         </select>
     </label>
+    <button id="btn-chart" class="btn-chart" onclick="toggleChart()">📈 图表</button>
 </div>
 
+<div id="chart-container" style="display:none; width:100%; height:500px; margin-bottom:16px;"></div>
+
 <table id="test-data-table">
     <thead></thead>
     <tbody></tbody>
@@ -59,6 +62,18 @@
     border-color: #2c3e50;
 }
 .tab-btn:hover:not(.active) { background: #e0e0e0; }
+.btn-chart {
+    margin-left: 16px;
+    padding: 6px 14px;
+    border: 1px solid #27ae60;
+    background: #fff;
+    color: #27ae60;
+    cursor: pointer;
+    border-radius: 4px;
+    font-size: 13px;
+}
+.btn-chart.active { background: #27ae60; color: #fff; }
 </style>
+<script src="https://cdn.jsdelivr.net/npm/echarts@5.5.0/dist/echarts.min.js"></script>
 <script src="{{ url_for('static', filename='js/test_data.js') }}"></script>
 {% endblock %}