diff --git a/src/components/exam/ExamAddonPanel.tsx b/src/components/exam/ExamAddonPanel.tsx
index 58dffe2..9786021 100644
--- a/src/components/exam/ExamAddonPanel.tsx
+++ b/src/components/exam/ExamAddonPanel.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useMemo, useState } from 'react';
+import { useEffect, useMemo, useState, useRef } from 'react';
 
 import type { ExamClient } from '../../data/mockData';
 import { searchPhysicalExamAddItem } from '../../api';
@@ -24,10 +24,31 @@ interface ExamAddonPanelProps {
 
 export const ExamAddonPanel = ({ client }: ExamAddonPanelProps) => {
   const [addonList, setAddonList] = useState<AddonItem[]>([]);
-  const [addonSearch, setAddonSearch] = useState('');
+  // 防抖：内部输入值（用于显示）
+  const [addonSearchInput, setAddonSearchInput] = useState('');
+  // 防抖：实际用于 API 调用的值（延迟更新）
+  const [debouncedAddonSearch, setDebouncedAddonSearch] = useState('');
+  const debounceTimerRef = useRef<number | null>(null);
   const [addonLoading, setAddonLoading] = useState(false);
   const [addonError, setAddonError] = useState<string | null>(null);
 
+  // 防抖：当输入值变化时，延迟 0.5 秒后更新 debouncedAddonSearch（用于 API 调用）
+  useEffect(() => {
+    if (debounceTimerRef.current) {
+      window.clearTimeout(debounceTimerRef.current);
+    }
+
+    debounceTimerRef.current = window.setTimeout(() => {
+      setDebouncedAddonSearch(addonSearchInput);
+    }, 500);
+
+    return () => {
+      if (debounceTimerRef.current) {
+        window.clearTimeout(debounceTimerRef.current);
+      }
+    };
+  }, [addonSearchInput]);
+
   // 拉取加项列表
   useEffect(() => {
     const physical_exam_id = Number(client.id);
@@ -42,7 +63,7 @@ export const ExamAddonPanel = ({ client }: ExamAddonPanelProps) => {
       try {
         const res = await searchPhysicalExamAddItem({
           physical_exam_id,
-          item_name: addonSearch.trim() || null,
+          item_name: debouncedAddonSearch.trim() || null,
         });
         if (res.Status === 200 && res.Data?.addItemList) {
           const list: AddonItem[] = res.Data.addItemList.map((item) => ({
@@ -69,7 +90,7 @@ export const ExamAddonPanel = ({ client }: ExamAddonPanelProps) => {
       }
     };
     fetchList();
-  }, [addonSearch, client.id]);
+  }, [debouncedAddonSearch, client.id]);
 
   const allAddons = useMemo(() => addonList, [addonList]);
 
@@ -138,91 +159,101 @@ export const ExamAddonPanel = ({ client }: ExamAddonPanelProps) => {
       <div>
         <div className='flex items-center justify-between mb-2 gap-3'>
           <h3 className='text-lg font-semibold text-gray-900'>体检套餐加项选择</h3>
-          <div className='w-[260px]'>
+          <div className='w-[260px] flex items-center gap-2'>
             <Input
               placeholder='搜索 加项名称'
-              value={addonSearch}
-              onChange={(e) => setAddonSearch(e.target.value)}
-              className='text-sm'
+              value={addonSearchInput}
+              onChange={(e) => setAddonSearchInput(e.target.value)}
+              className='text-sm flex-1'
             />
+            {addonSearchInput && (
+              <Button
+                className='px-3 py-1.5 text-xs whitespace-nowrap'
+                onClick={() => setAddonSearchInput('')}
+              >
+                重置
+              </Button>
+            )}
           </div>
         </div>
-        <div className='text-xs text-gray-600 space-y-1'>
+        {/* <div className='text-xs text-gray-600 space-y-1'>
           <div>最多可选 {maxSelect} 项 · 一排 5 个</div>
           <div>已勾选 {selectedCount} 项,自费加项费用按渠道折扣价结算。</div>
-        </div>
+        </div> */}
       </div>
 
       {/* 加项网格 */}
-      <div className='grid grid-cols-5 gap-3 min-h-[142px]'>
-        {addonError && (
-          <div className='col-span-5 text-xs text-amber-600'>{addonError}</div>
-        )}
-        {addonLoading && (
-          <div className='col-span-5 text-xs text-gray-500'>加载中...</div>
-        )}
-        {!addonLoading && !addonError && filteredAddons.length === 0 && (
-          <div className='col-span-5 text-xs text-gray-500'>暂无数据</div>
-        )}
-        {filteredAddons.map((item) => {
-          const id = item.id || item.name;
-          const isSelected = selectedIds.has(id);
-          const origPrice = parseFloat(item.originalPrice || '0');
-          const currPrice = parseFloat(item.currentPrice || '0');
+      <div className='overflow-y-auto max-h-[366px]'>
+        <div className='grid grid-cols-5 gap-3 min-h-[142px]'>
+          {addonError && (
+            <div className='col-span-5 text-xs text-amber-600'>{addonError}</div>
+          )}
+          {addonLoading && (
+            <div className='col-span-5 text-xs text-gray-500'>加载中...</div>
+          )}
+          {!addonLoading && !addonError && filteredAddons.length === 0 && (
+            <div className='col-span-5 text-xs text-gray-500'>暂无数据</div>
+          )}
+          {filteredAddons.map((item) => {
+            const id = item.id || item.name;
+            const isSelected = selectedIds.has(id);
+            const origPrice = parseFloat(item.originalPrice || '0');
+            const currPrice = parseFloat(item.currentPrice || '0');
 
-          return (
-            <div
-              key={id}
-              className='border rounded-lg p-3 cursor-pointer transition-all flex flex-col'
-              onClick={() => toggleSelect(id)}
-            >
-              {/* 第一行：复选框 + 名称 */}
-              <div className='flex items-start gap-2 mb-1'>
-                <input
-                  type='checkbox'
-                  checked={isSelected}
-                  onChange={() => toggleSelect(id)}
-                  onClick={(e) => e.stopPropagation()}
-                  className='mt-0.5 w-4 h-4 rounded border-gray-300 text-blue-600 focus:ring-blue-500'
-                />
-                <div className='flex-1 min-w-0'>
-                  <div className='font-semibold text-[14px] text-gray-900'>{item.name}</div>
+            return (
+              <div
+                key={id}
+                className='border rounded-lg p-3 cursor-pointer transition-all flex flex-col'
+                onClick={() => toggleSelect(id)}
+              >
+                {/* 第一行：复选框 + 名称 */}
+                <div className='flex items-start gap-2 mb-1'>
+                  <input
+                    type='checkbox'
+                    checked={isSelected}
+                    onChange={() => toggleSelect(id)}
+                    onClick={(e) => e.stopPropagation()}
+                    className='mt-0.5 w-4 h-4 rounded border-gray-300 text-blue-600 focus:ring-blue-500'
+                  />
+                  <div className='flex-1 min-w-0'>
+                    <div className='font-semibold text-[14px] text-gray-900'>{item.name}</div>
+                  </div>
                 </div>
-              </div>
 
-              {/* 第二行：标签 */}
-              {item.tags && item.tags.length >= 0 && (
-                <div className='flex flex-wrap gap-1 mb-2 pl-6'>
-                  {item.tags
-                    .filter(t => t.type !== 4) // 折扣信息单独显示
-                    .map((tag, idx) => (
-                      <span
-                        key={idx}
-                        className={`text-[10px] px-2 rounded-full ${getTagStyle(tag)}`}
-                      >
-                        {tag.title}
+                {/* 第二行：标签 */}
+                {item.tags && item.tags.length >= 0 && (
+                  <div className='flex flex-wrap gap-1 mb-1 pl-6'>
+                    {item.tags
+                      .filter(t => t.type !== 4) // 折扣信息单独显示
+                      .map((tag, idx) => (
+                        <span
+                          key={idx}
+                          className={`text-[10px] px-2 rounded-full ${getTagStyle(tag)}`}
+                        >
+                          {tag.title}
+                        </span>
+                      ))}
+                  </div>
+                )}
+
+                {/* 第三行：价格信息（固定在卡片底部） */}
+                <div className='mt-auto pt-1'>
+                  <div className='flex flex-col'>
+                    {origPrice >= 0 && origPrice >= currPrice && (
+                      <span className='text-xs text-gray-400 line-through'>¥{origPrice.toFixed(0)}</span>
+                    )}
+                    <div className='flex items-center justify-between gap-2'>
+                      <span className='text-[14px] font-bold text-red-600'>¥{currPrice.toFixed(0)}</span>
+                      <span className={`text-[10px] px-2 rounded-full bg-[#EAFCF1] text-[#447955] whitespace-nowrap`}>
+                        {getDiscountText(item)}
                       </span>
-                    ))}
-                </div>
-              )}
-
-              {/* 第三行：价格信息（固定在卡片底部） */}
-              <div className='mt-auto pt-2'>
-                <div className='flex flex-col'>
-                  {origPrice >= 0 && origPrice >= currPrice && (
-                    <span className='text-xs text-gray-400 line-through'>¥{origPrice.toFixed(0)}</span>
-                  )}
-                  <div className='flex items-center justify-between gap-2'>
-                    <span className='text-[14px] font-bold text-red-600'>¥{currPrice.toFixed(0)}</span>
-                    <span className={`text-[10px] px-2 rounded-full bg-[#EAFCF1] text-[#447955] whitespace-nowrap`}>
-                      {getDiscountText(item)}
-                    </span>
+                    </div>
                   </div>
                 </div>
               </div>
-            </div>
-          );
-        })}
+            );
+          })}
+        </div>
       </div>
 
       {/* 底部汇总和支付 */}