diff --git a/lib/default/options.js b/lib/default/options.js
index 64c17bb..bdedc83 100644
--- a/lib/default/options.js
+++ b/lib/default/options.js
@@ -1,23 +1,24 @@
 module.exports = () => ({
+    // logging levels: off, error, info, debug
+    logging: 'info',
+
     // the report name
     name: '',
 
-    // the output file path (relative process.cwd)
+    // the output html file path (relative process.cwd)
     outputFile: './test-results/report.html',
 
+    // whether to copy attachments to the reporter output dir, defaults to true
+    // it is useful when there are multiple html reports being output.
+    copyAttachments: true,
+
     // attachment path handler
     attachmentPath: null,
     // attachmentPath: (currentPath, extras) => `https://cenfun.github.io/monocart-reporter/${currentPath}`,
 
-    // whether copy attachments to the output dir, defaults to true
-    // it is useful when there are multiple reports being output.
-    copyAttachments: true,
-
+    // custom trace viewer url
     traceViewerUrl: 'https://trace.playwright.dev/?trace={traceUrl}',
 
-    // logging levels: off, error, info, debug
-    logging: 'info',
-
     // timezone offset in minutes, GMT+0800 = -480
     timezoneOffset: 0,
 
@@ -28,6 +29,7 @@ module.exports = () => ({
     //     sourceFilter: (sourcePath) => sourcePath.search(/src\/.+/) !== -1,
     // },
 
+    // Global State Management
     state: null,
 
     // trend data handler
diff --git a/lib/index.d.ts b/lib/index.d.ts
index 4b8c373..e65eea8 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -45,12 +45,21 @@ export interface Helper {
 }
 
 export type MonocartReporterOptions = {
+    /** logging levels: off, error, info, debug */
+    logging?: string;
+
     /** the report name */
     name?: string;
 
     /** the output file path (relative process.cwd) */
     outputFile?: string;
 
+    /**
+     *  whether to copy attachments to the reporter output dir, defaults to true
+     *  it is useful when there are multiple html reports being output
+     */
+    copyAttachments?: boolean;
+
     /** attachment path handler, for example:  
      * ```js
      * attachmentPath: (currentPath, extras) => `https://cenfun.github.io/monocart-reporter/${currentPath}` 
@@ -58,18 +67,9 @@ export type MonocartReporterOptions = {
      */
     attachmentPath?: (currentPath: string, extras: any) => string;
 
-    /**
-     *  whether copy attachments to the output dir, defaults to true
-     *  it is useful when there are multiple reports being output
-     */
-    copyAttachments?: boolean;
-
     /** custom trace viewer url: https://github.com/cenfun/monocart-reporter?#view-trace-online */
     traceViewerUrl?: string;
 
-    /** logging levels: off, error, info, debug */
-    logging?: string;
-
     /** timezone offset in minutes, For example: GMT+0800 = -480 */
     timezoneOffset?: number;
 
diff --git a/lib/index.js b/lib/index.js
index 0227a88..829f54d 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -45,21 +45,19 @@ class MonocartReporter {
         };
 
         Util.initLoggingLevel(this.options.logging, 'reporter');
-        this.initDir();
 
         this.testMap = new Map();
 
         this.system = getSystemInfo();
         this.system.timestampStart = timestampStart;
         this.system.ticks = [];
-        this.trends = [];
-        getTrends(this.options.trend).then((res) => {
-            this.trends = res;
-        });
 
         this.tickTime = this.options.tickTime || 1000;
         this.tickStart();
 
+        this.trends = [];
+        this.initTrendsAndDir();
+
         const stateOptions = this.options.state;
         if (stateOptions) {
             this.bindFunctions(stateOptions);
@@ -67,14 +65,20 @@ class MonocartReporter {
         }
     }
 
-    async initDir() {
+    async initTrendsAndDir() {
 
         const cwd = Util.formatPath(process.cwd());
         this.options.cwd = cwd;
 
-        const outputFile = await Util.resolveOutputFile(this.options.outputFile);
+        // read trends from json before clean dir
+        this.trends = await getTrends(this.options.trend);
+
         // init outputDir
+        const outputFile = await Util.resolveOutputFile(this.options.outputFile);
+        this.options.outputFile = outputFile;
+
         const outputDir = path.dirname(outputFile);
+
         Util.initDir(outputDir);
         // for visitor relative path of attachments
         this.options.outputDir = outputDir;