diff --git a/code/firmware-2.7.15.567b8ea/src/graphics/Screen.cpp b/code/firmware-2.7.15.567b8ea/src/graphics/Screen.cpp
index 0db0505..5144264 100644
--- a/code/firmware-2.7.15.567b8ea/src/graphics/Screen.cpp
+++ b/code/firmware-2.7.15.567b8ea/src/graphics/Screen.cpp
@@ -1597,17 +1597,19 @@ int Screen::handleInputEvent(const InputEvent *event)
             } else if (event->inputEvent == INPUT_BROKER_RIGHT || event->inputEvent == INPUT_BROKER_USER_PRESS) {
                 showNextFrame();
             } else if (event->inputEvent == INPUT_BROKER_UP) {
-                // 在节点列表界面，双击切换到上一个模式
+                // 在节点列表界面，单击滚动，双击切换模式
                 if (this->ui->getUiState()->currentFrame == framesetInfo.positions.nodelist) {
-                    if (graphics::NodeListRenderer::handleUpDoubleClick()) {
+                    int result = graphics::NodeListRenderer::handleUpKey();
+                    if (result > 0) {
                         setFastFramerate();
                         ui->update();
                     }
                 }
             } else if (event->inputEvent == INPUT_BROKER_DOWN) {
-                // 在节点列表界面，双击切换到下一个模式
+                // 在节点列表界面，单击滚动，双击切换模式
                 if (this->ui->getUiState()->currentFrame == framesetInfo.positions.nodelist) {
-                    if (graphics::NodeListRenderer::handleDownDoubleClick()) {
+                    int result = graphics::NodeListRenderer::handleDownKey();
+                    if (result > 0) {
                         setFastFramerate();
                         ui->update();
                     }
diff --git a/code/firmware-2.7.15.567b8ea/src/graphics/draw/NodeListRenderer.cpp b/code/firmware-2.7.15.567b8ea/src/graphics/draw/NodeListRenderer.cpp
index 0c6c46a..573ebbe 100644
--- a/code/firmware-2.7.15.567b8ea/src/graphics/draw/NodeListRenderer.cpp
+++ b/code/firmware-2.7.15.567b8ea/src/graphics/draw/NodeListRenderer.cpp
@@ -74,38 +74,57 @@ void switchToPrevMode()
     currentMode = static_cast<NodeListMode>((currentMode + MODE_COUNT - 1) % MODE_COUNT);
 }
 
-// 处理 UP 按键双击检测（从 Screen.cpp 调用）
-// 返回 true 表示检测到双击，需要切换模式
-bool handleUpDoubleClick()
+// 滚动控制函数
+void scrollUp()
+{
+    scrollIndex--;
+    if (scrollIndex < 0) {
+        scrollIndex = 0;
+    }
+}
+
+void scrollDown()
+{
+    scrollIndex++;
+    // 最大滚动值在渲染时计算，这里只做简单限制
+}
+
+// 处理 UP 按键：单击滚动，双击切换模式
+// 返回 0: 无操作, 1: 滚动触发, 2: 模式切换触发
+int handleUpKey()
 {
     unsigned long now = millis();
     
     if (lastUpPressTime > 0 && (now - lastUpPressTime) < DOUBLE_CLICK_THRESHOLD_MS) {
         // 双击触发：切换到上一个模式
         switchToPrevMode();
-        lastUpPressTime = 0; // 重置，防止三次点击触发两次
-        return true;
+        lastUpPressTime = 0;
+        return 2;
     }
     
+    // 单击触发：滚动
+    scrollUp();
     lastUpPressTime = now;
-    return false;
+    return 1;
 }
 
-// 处理 DOWN 按键双击检测（从 Screen.cpp 调用）
-// 返回 true 表示检测到双击，需要切换模式
-bool handleDownDoubleClick()
+// 处理 DOWN 按键：单击滚动，双击切换模式
+// 返回 0: 无操作, 1: 滚动触发, 2: 模式切换触发
+int handleDownKey()
 {
     unsigned long now = millis();
     
     if (lastDownPressTime > 0 && (now - lastDownPressTime) < DOUBLE_CLICK_THRESHOLD_MS) {
         // 双击触发：切换到下一个模式
         switchToNextMode();
-        lastDownPressTime = 0; // 重置，防止三次点击触发两次
-        return true;
+        lastDownPressTime = 0;
+        return 2;
     }
     
+    // 单击触发：滚动
+    scrollDown();
     lastDownPressTime = now;
-    return false;
+    return 1;
 }
 
 // =============================
diff --git a/code/firmware-2.7.15.567b8ea/src/graphics/draw/NodeListRenderer.h b/code/firmware-2.7.15.567b8ea/src/graphics/draw/NodeListRenderer.h
index 5b4ee33..814150c 100644
--- a/code/firmware-2.7.15.567b8ea/src/graphics/draw/NodeListRenderer.h
+++ b/code/firmware-2.7.15.567b8ea/src/graphics/draw/NodeListRenderer.h
@@ -59,9 +59,14 @@ void switchToNextMode();
 void switchToPrevMode();
 NodeListMode getCurrentMode();
 
-// Double-click detection for UP/DOWN keys (returns true if double-click detected)
-bool handleUpDoubleClick();
-bool handleDownDoubleClick();
+// Scroll control functions
+void scrollUp();
+void scrollDown();
+
+// UP/DOWN key handler: single click = scroll, double click = switch mode
+// Returns: 0=no action, 1=scroll triggered, 2=mode switch triggered
+int handleUpKey();
+int handleDownKey();
 
 // Bitmap drawing function
 void drawScaledXBitmap16x16(int x, int y, int width, int height, const uint8_t *bitmapXBM, OLEDDisplay *display);