diff --git a/public/css/style.css b/public/css/style.css
index 6d3f246..c5e473b 100644
--- a/public/css/style.css
+++ b/public/css/style.css
@@ -613,6 +613,29 @@ input:checked+.slider:before {
   gap: 16px;
 }
 
+.chart-header-right {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+}
+
+.source-select {
+  padding: 6px 12px;
+  background: var(--bg-input);
+  border: 1px solid var(--border-color);
+  border-radius: var(--radius-sm);
+  color: var(--text-primary);
+  font-size: 0.85rem;
+  outline: none;
+  cursor: pointer;
+  transition: all 0.2s ease;
+}
+
+.source-select:hover {
+  border-color: var(--border-hover);
+  background: rgba(99, 102, 241, 0.05);
+}
+
 .chart-title {
   display: flex;
   align-items: center;
diff --git a/public/index.html b/public/index.html
index 94e704f..aa4b43e 100644
--- a/public/index.html
+++ b/public/index.html
@@ -256,6 +256,11 @@
               </svg>
               服务器详情
             </h2>
+            <div class="chart-header-right">
+              <select id="sourceFilter" class="source-select">
+                <option value="all">所有数据源</option>
+              </select>
+            </div>
           </div>
           <div class="server-table-wrap">
             <table class="server-table" id="serverTable">
diff --git a/public/js/app.js b/public/js/app.js
index ac2f256..91a7ee7 100644
--- a/public/js/app.js
+++ b/public/js/app.js
@@ -70,7 +70,8 @@
     detailCpuCores: document.getElementById('detailCpuCores'),
     detailMemTotal: document.getElementById('detailMemTotal'),
     detailUptime: document.getElementById('detailUptime'),
-    detailContainer: document.getElementById('detailContainer')
+    detailContainer: document.getElementById('detailContainer'),
+    sourceFilter: document.getElementById('sourceFilter')
   };
 
   // ---- State ----
@@ -78,6 +79,8 @@
   let networkChart = null;
   let user = null; // Currently logged in user
   let currentServerDetail = { instance: null, job: null, source: null, charts: {} };
+  let allServersData = [];
+  let currentSourceFilter = 'all';
 
   // ---- Initialize ----
   function init() {
@@ -155,6 +158,14 @@
         networkChart.draw();
       });
     }
+    
+    // Source filter listener
+    if (dom.sourceFilter) {
+      dom.sourceFilter.addEventListener('change', () => {
+        currentSourceFilter = dom.sourceFilter.value;
+        renderFilteredServers();
+      });
+    }
 
     // Check auth status
     checkAuthStatus();
@@ -312,6 +323,7 @@
     try {
       const response = await fetch('/api/metrics/overview');
       const data = await response.json();
+      allServersData = data.servers || [];
       updateDashboard(data);
     } catch (err) {
       console.error('Error fetching metrics:', err);
@@ -349,7 +361,7 @@
     dom.traffic24hTotal.textContent = formatBytes(data.traffic24h.total || (data.traffic24h.rx + data.traffic24h.tx));
 
     // Update server table
-    updateServerTable(data.servers);
+    renderFilteredServers();
 
     // Flash animation
     if (previousMetrics) {
@@ -363,6 +375,14 @@
     previousMetrics = data;
   }
 
+  function renderFilteredServers() {
+    let filtered = allServersData;
+    if (currentSourceFilter !== 'all') {
+      filtered = allServersData.filter(s => s.source === currentSourceFilter);
+    }
+    updateServerTable(filtered);
+  }
+
   // ---- Server Table ----
   function updateServerTable(servers) {
     if (!servers || servers.length === 0) {
@@ -390,7 +410,8 @@
             <span class="status-dot ${server.up ? 'status-dot-online' : 'status-dot-offline'}"></span>
           </td>
           <td>
-            <div style="color: var(--text-primary); font-weight: 600; font-family: var(--font-sans);">${escapeHtml(server.job)}</div>
+            <div style="color: var(--text-primary); font-weight: 600; font-family: var(--font-sans); line-height: 1.2;">${escapeHtml(server.job)}</div>
+            <div style="color: var(--text-muted); font-size: 0.7rem; font-family: var(--font-mono); font-weight: 400; margin-top: 2px;">${escapeHtml(server.originalInstance)}</div>
           </td>
           <td>${escapeHtml(server.source)}</td>
           <td>
@@ -770,11 +791,28 @@
     dom.siteSettingsMessage.className = 'form-message';
   }
 
+  function updateSourceFilterOptions(sources) {
+    if (!dom.sourceFilter) return;
+    const current = dom.sourceFilter.value;
+    let html = '<option value="all">所有数据源</option>';
+    sources.forEach(source => {
+      html += `<option value="${escapeHtml(source.name)}">${escapeHtml(source.name)}</option>`;
+    });
+    dom.sourceFilter.innerHTML = html;
+    if (sources.some(s => s.name === current)) {
+      dom.sourceFilter.value = current;
+    } else {
+      dom.sourceFilter.value = 'all';
+      currentSourceFilter = 'all';
+    }
+  }
+
   async function loadSources() {
     try {
       const response = await fetch('/api/sources');
       const sources = await response.json();
       dom.sourceCount.textContent = `${sources.length} 个数据源`;
+      updateSourceFilterOptions(sources);
       renderSources(sources);
     } catch (err) {
       console.error('Error loading sources:', err);
diff --git a/server/prometheus-service.js b/server/prometheus-service.js
index 647a76f..efd02bd 100644
--- a/server/prometheus-service.js
+++ b/server/prometheus-service.js
@@ -12,9 +12,9 @@ const httpsAgent = new https.Agent({ keepAlive: true, rejectUnauthorized: false
 const serverIdMap = new Map(); // token -> { instance, job, source }
 const SECRET = crypto.randomBytes(16).toString('hex');
 
-function getServerToken(instance) {
+function getServerToken(instance, job, source) {
   const hash = crypto.createHmac('sha256', SECRET)
-    .update(instance)
+    .update(`${instance}:${job}:${source}`)
     .digest('hex')
     .substring(0, 16);
   return hash;
@@ -220,11 +220,11 @@ async function getOverviewMetrics(url, sourceName) {
   const instances = new Map();
 
   const getOrCreate = (metric) => {
-    const originalInstance = metric.instance;
-    const token = getServerToken(originalInstance, sourceName);
+    const job = metric.job || 'Unknown';
+    const token = getServerToken(originalInstance, job, sourceName);
     
     // Store mapping for detail queries
-    serverIdMap.set(token, { instance: originalInstance, source: sourceName, job: metric.job });
+    serverIdMap.set(token, { instance: originalInstance, source: sourceName, job });
 
     if (!instances.has(token)) {
       instances.set(token, {
@@ -252,14 +252,13 @@ async function getOverviewMetrics(url, sourceName) {
   };
 
   // Initialize instances from targets first (to ensure we have all servers even if they have no metrics)
-  const nodeJobRegex = /node|exporter|host/i;
   for (const target of targetsResult) {
     const labels = target.labels || {};
     const instance = labels.instance;
-    const job = labels.job;
+    const job = labels.job || '';
     
-    // Only include targets that look like node-exporters
-    if (instance && (nodeJobRegex.test(job) || nodeJobRegex.test(target.scrapePool))) {
+    // Include every target from the activeTargets list
+    if (instance) {
       const inst = getOrCreate(labels);
       inst.up = target.health === 'up';
     }
@@ -371,8 +370,7 @@ async function getOverviewMetrics(url, sourceName) {
       total: totalTraffic24hRx + totalTraffic24hTx
     },
     servers: allInstancesList.map(s => {
-      const { originalInstance, ...rest } = s;
-      return rest;
+      return s; // Include all fields including originalInstance
     })
   };
 }