diff --git a/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/AccuracyLeftPanel.tsx b/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/AccuracyLeftPanel.tsx
index 71682214de9357fb2a757ff7d84ac4a47cd471ab..3217081ade32a043265f2ac1d98008c14a4148ba 100644
--- a/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/AccuracyLeftPanel.tsx
+++ b/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/AccuracyLeftPanel.tsx
@@ -41,6 +41,10 @@ interface IProps {
 const LOSS_REG_EXP = /[+-]?\d+(?:\.\d+)?(?:[eE][+-]?\d+)?/
 // 匹配自然数
 const ITER_REG_EXP = /\d+/
+// 单个文件最大大小
+const FILE_MAX_SIZE = 10 * 1024 * 1024
+// 最大文件上传数量
+export const MAX_FILE_COUNT = 6
 
 const useStyles = makeStyles(() => ({
   root: {
@@ -106,8 +110,6 @@ const useStyles = makeStyles(() => ({
   }
 }))
 
-// 最大文件上传数量
-export const MAX_FILE_COUNT = 6
 export const AccuracyLeftPanel: React.FC<IProps> = (props) => {
   const { onChangeCheckedFileList, onChangeUploadedCount } = props
   const classes = useStyles()
@@ -122,10 +124,8 @@ export const AccuracyLeftPanel: React.FC<IProps> = (props) => {
     file.losses = []
     const lines = file.fileContent.split(/\r\n|\n|\r/)
     for (let i = 0; i < lines.length; i++) {
-      const iter = file.useIterRegex ? parseByRegex(lines[i], file.iterTag, false)
-        : parseByTag(lines[i], file.iterTag, false)
-      const loss = file.useLossRegex ? parseByRegex(lines[i], file.lossTag, true)
-        : parseByTag(lines[i], file.lossTag, true)
+      const iter = parseByTag(lines[i], file.iterTag, false)
+      const loss = parseByTag(lines[i], file.lossTag, true)
       if (iter !== null && loss !== null) {
         file.iters.push(iter)
         file.losses.push([iter, loss])
@@ -135,19 +135,6 @@ export const AccuracyLeftPanel: React.FC<IProps> = (props) => {
     return file
   }
 
-  const parseByRegex = (line: string, regex: string, isLoss: boolean): number | null => {
-    let result: number | null = null
-    const res = new RegExp(regex).exec(line)
-    if (res !== null) {
-      if (isLoss) {
-        result = parseFloat(res[0])
-      } else {
-        result = parseInt(res[0])
-      }
-    }
-    return result
-  }
-
   const parseByTag = (line: string, tag: string, isLoss: boolean): number | null => {
     let pos = line.indexOf(tag)
     let result: number | null = null
@@ -175,6 +162,13 @@ export const AccuracyLeftPanel: React.FC<IProps> = (props) => {
     setImportSpin(true)
     const file = e.target.files?.[0]
     if (file) {
+      if (file.size > FILE_MAX_SIZE) {
+        message.warn('Sorry, the file size cannot be greater than 10MB.')
+        setImportSpin(false)
+        // 防止同名文件不触发事件
+        e.target.value = ''
+        return
+      }
       const reader = new FileReader()
       reader.onload = ((selectedFile) => {
         return (e) => {
@@ -210,11 +204,9 @@ export const AccuracyLeftPanel: React.FC<IProps> = (props) => {
       id: fileList.length,
       fileName: fileName,
       fileContent,
-      checked: false,
+      checked: true,
       lossTag: 'loss:',
-      useLossRegex: false,
       iterTag: 'iteration',
-      useIterRegex: false,
       iters: [],
       losses: [],
       iterLosses: {}
diff --git a/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/RegexConfigModal.tsx b/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/RegexConfigModal.tsx
index 4613421053b14b6c3bf372c7736312ac6092cefa..0a28adb65a373ebd8b09516ca5be985abaaf1132 100644
--- a/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/RegexConfigModal.tsx
+++ b/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/RegexConfigModal.tsx
@@ -63,25 +63,15 @@ export const RegexConfigModal: React.FC<IProps> = (props) => {
   const classes = useStyles()
   const [lossTag, setLossTag] = useState<string>(props.file.lossTag)
   const [iterTag, setIterTag] = useState<string>(props.file.iterTag)
-  const [lossRegex, setLossRegex] = useState<boolean>(props.file.useLossRegex)
-  const [iterRegex, setIterRegex] = useState<boolean>(props.file.useIterRegex)
 
   const lossTagChange = (e: React.ChangeEvent<HTMLInputElement>) => {
     setLossTag(e.target.value)
   }
 
-  const lossRegexChange = (e: CheckboxChangeEvent) => {
-    setLossRegex(e.target.checked)
-  }
-
   const iterTagChange = (e: React.ChangeEvent<HTMLInputElement>) => {
     setIterTag(e.target.value)
   }
 
-  const iterRegexChange = (e: CheckboxChangeEvent) => {
-    setIterRegex(e.target.checked)
-  }
-
   const configModalOk = () => {
     if (lossTag.trim() === '') {
       message.warning('Loss Tag cannot be empty or only spaces!')
@@ -91,16 +81,13 @@ export const RegexConfigModal: React.FC<IProps> = (props) => {
       message.warning('Iteration Tag cannot be empty or only spaces!')
       return
     }
-    if (lossTag === props.file.lossTag && iterTag === props.file.iterTag
-      && lossRegex === props.file.useLossRegex && iterRegex === props.file.useIterRegex) {
+    if (lossTag === props.file.lossTag && iterTag === props.file.iterTag) {
       props.onCancel()
     } else {
       const configFile: FileInfo = {
         ...props.file,
         lossTag,
-        iterTag,
-        useLossRegex: lossRegex,
-        useIterRegex: iterRegex
+        iterTag
       }
       props.onOk(configFile)
     }
@@ -114,18 +101,16 @@ export const RegexConfigModal: React.FC<IProps> = (props) => {
       open
       centered
       maskClosable={false}
-      width={560}
+      width={480}
       className={classes.root}
     >
       <div className={classes.filterItem}>
         <span className="tagLabel">Loss Tag</span>
         <Input onChange={lossTagChange} value={lossTag} maxLength={200} />
-        <Checkbox checked={lossRegex} onChange={lossRegexChange}>Regex</Checkbox>
       </div>
       <div className={classes.filterItem}>
         <span className="tagLabel">Iteration Tag</span>
         <Input onChange={iterTagChange} value={iterTag} maxLength={200} />
-        <Checkbox checked={iterRegex} onChange={iterRegexChange}>Regex</Checkbox>
       </div>
     </Modal>
   )
diff --git a/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/entity.ts b/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/entity.ts
index bebfbe316801aca7043363a8e12951a576c40da1..0a0a1ee4b28661799aea5a9233c4f3a90f4a251e 100644
--- a/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/entity.ts
+++ b/plugins/tensorboard-plugins/tb_plugin/fe/src/components/Accuracy/entity.ts
@@ -23,9 +23,7 @@ export interface FileInfo {
   fileContent: string
   checked: boolean
   lossTag: string
-  useLossRegex: boolean
   iterTag: string
-  useIterRegex: boolean
   iters: number[]
   losses: number[][]
   iterLosses: { [iter: number]: number }