diff --git a/frontend/public/earth/js/constants.js b/frontend/public/earth/js/constants.js
index 912783ba..a1c68a0a 100644
--- a/frontend/public/earth/js/constants.js
+++ b/frontend/public/earth/js/constants.js
@@ -38,7 +38,15 @@ export const CABLE_COLORS = {
   'default': 0xffff44
 };
 
-// Grid configuration
+export const CABLE_CONFIG = {
+  lockedOpacityMin: 0.6,
+  lockedOpacityMax: 1.0,
+  otherOpacity: 0.5,
+  otherBrightness: 0.6,
+  pulseSpeed: 0.003,
+  pulseCoefficient: 0.4
+};
+
 export const GRID_CONFIG = {
   latitudeStep: 10,
   longitudeStep: 30,
diff --git a/frontend/public/earth/js/main.js b/frontend/public/earth/js/main.js
index 5cc88f0a..843702ec 100644
--- a/frontend/public/earth/js/main.js
+++ b/frontend/public/earth/js/main.js
@@ -1,7 +1,7 @@
 import * as THREE from 'three';
 import { createNoise3D } from 'simplex-noise';
 
-import { CONFIG } from './constants.js';
+import { CONFIG, CABLE_CONFIG } from './constants.js';
 import { latLonToVector3, vector3ToLatLon, screenToEarthCoords } from './utils.js';
 import { 
   showStatusMessage, 
@@ -32,21 +32,48 @@ let dragStartTime = 0;
 let isLongDrag = false;
 
 function clearLockedObject() {
-  if (lockedObjectType === 'cable' && lockedObject) {
-    const prevCableId = lockedObject.userData.cableId;
-    const prevSameCables = getCablesById(prevCableId);
-    prevSameCables.forEach(c => {
-      if (c.userData.originalColor !== undefined) {
-        c.material.color.setHex(c.userData.originalColor);
-      }
-    });
-  }
+  hoveredCable = null;
   lockedObject = null;
   lockedObjectType = null;
   lockedSatellite = null;
   cableLockedData = null;
 }
 
+function isSameCable(cable1, cable2) {
+  return cable1 && cable2 && cable1.userData.cableId === cable2.userData.cableId;
+}
+
+function applyCableVisualState() {
+  const allCables = getCableLines();
+  const pulse = (Math.sin(Date.now() * CABLE_CONFIG.pulseSpeed) + 1) * 0.5;
+  const isLocked = lockedObjectType === 'cable' && lockedObject;
+  
+  allCables.forEach(c => {
+    const cableIsLocked = isSameCable(c, lockedObject);
+    const cableIsHovered = isSameCable(c, hoveredCable);
+    
+    if (cableIsLocked) {
+      c.material.opacity = CABLE_CONFIG.lockedOpacityMin + pulse * CABLE_CONFIG.pulseCoefficient;
+      c.material.color.setRGB(1, 1, 1);
+    } else if (cableIsHovered) {
+      c.material.opacity = 1;
+      c.material.color.setRGB(1, 1, 1);
+    } else if (isLocked) {
+      c.material.opacity = CABLE_CONFIG.otherOpacity;
+      const origColor = c.userData.originalColor;
+      const brightness = CABLE_CONFIG.otherBrightness;
+      c.material.color.setRGB(
+        ((origColor >> 16) & 255) / 255 * brightness,
+        ((origColor >> 8) & 255) / 255 * brightness,
+        (origColor & 255) / 255 * brightness
+      );
+    } else {
+      c.material.opacity = 1;
+      c.material.color.setHex(c.userData.originalColor);
+    }
+  });
+}
+
 window.addEventListener('error', (e) => {
   console.error('全局错误:', e.error);
   showStatusMessage('加载错误: ' + e.error?.message, 'error');
@@ -204,14 +231,7 @@ function onMouseMove(event, camera) {
   const frontCables = getFrontFacingCables(allCableLines, camera);
   const intersects = raycaster.intersectObjects(frontCables);
   
-  if (hoveredCable && (lockedObjectType !== 'cable' || hoveredCable !== lockedObject)) {
-    const prevCableId = hoveredCable.userData.cableId;
-    const prevSameCables = getCablesById(prevCableId);
-    prevSameCables.forEach(c => {
-      if (c.userData.originalColor !== undefined) {
-        c.material.color.setHex(c.userData.originalColor);
-      }
-    });
+  if (hoveredCable && (lockedObjectType !== 'cable' || !isSameCable(hoveredCable, lockedObject))) {
     hoveredCable = null;
   }
   
@@ -231,16 +251,7 @@ function onMouseMove(event, camera) {
   
   if (hasHoveredCable) {
     const cable = intersects[0].object;
-    const cableId = cable.userData.cableId;
-    const sameCables = getCablesById(cableId);
-    
-    if (lockedObjectType !== 'cable' || cable !== lockedObject) {
-      sameCables.forEach(c => {
-        c.material.color.setHex(0xffffff);
-        c.material.opacity = 1;
-      });
-      hoveredCable = cable;
-    }
+    hoveredCable = cable;
     
     showInfoCard('cable', {
       name: cable.userData.name,
@@ -421,16 +432,7 @@ function animate() {
     earth.rotation.y += CONFIG.rotationSpeed;
   }
   
-  if (lockedObjectType === 'cable') {
-    const pulse = (Math.sin(Date.now() * 0.003) + 1) * 0.5;
-    const glowIntensity = 0.7 + pulse * 0.3;
-    const cableId = lockedObject.userData.cableId;
-    const sameCables = getCablesById(cableId);
-    sameCables.forEach(c => {
-      c.material.opacity = 0.6 + pulse * 0.4;
-      c.material.color.setRGB(glowIntensity, glowIntensity, glowIntensity);
-    });
-  }
+  applyCableVisualState();
   
   updateSatellitePositions(16);