diff --git a/cmd/blazehttp/main.go b/cmd/blazehttp/main.go
index 18587c24..b3467636 100644
--- a/cmd/blazehttp/main.go
+++ b/cmd/blazehttp/main.go
@@ -26,6 +26,7 @@ var (
 	glob              string // use glob expression to select multi files
 	timeout           = 1000 // default 1000 ms
 	c                 = 10   // default 10 concurrent workers
+	s                 = 0    // default 0 sleep second
 	mHost             string // modify host header
 	requestPerSession bool   // send request per session
 )
@@ -37,6 +38,7 @@ func init() {
 	}
 	flag.StringVar(&target, "t", "", "target website, example: http://192.168.0.1:8080")
 	flag.IntVar(&c, "c", 10, "concurrent workers, default 10")
+	flag.IntVar(&s, "s", 0, "sleep second, default 0")
 	flag.StringVar(&glob, "g", "", "glob expression, example: *.http")
 	flag.IntVar(&timeout, "timeout", 1000, "connection timeout, default 1000 ms")
 	flag.StringVar(&mHost, "H", "", "modify host header")
@@ -118,6 +120,7 @@ func main() {
 		fileList,
 		blockStatusCode,
 		worker.WithConcurrence(c),
+		worker.WithSleep(s),
 		worker.WithReqHost(mHost),
 		worker.WithReqPerSession(requestPerSession),
 		worker.WithTimeout(timeout),
diff --git a/gui/main.go b/gui/main.go
index 61c2148d..76de6a55 100644
--- a/gui/main.go
+++ b/gui/main.go
@@ -242,6 +242,11 @@ func MakeRunForm(w fyne.Window, outputCh chan string, resultCh chan *worker.Resu
 	workers := widget.NewEntry()
 	workers.SetText("10")
 	workers.Validator = validation.NewRegexp(`^\d+$`, "工作线程必须是数字")
+
+	sleep := widget.NewEntry()
+	sleep.SetText("0")
+	sleep.Validator = validation.NewRegexp(`^\d+$`, "请求间隔必须是数字")
+	
 	// modify host header
 	reqHost := widget.NewEntry()
 	// timeout
@@ -272,6 +277,7 @@ func MakeRunForm(w fyne.Window, outputCh chan string, resultCh chan *worker.Resu
 		Items: []*widget.FormItem{
 			{Text: "目标网站", Widget: target, HintText: ""},
 			{Text: "工作线程", Widget: workers, HintText: ""},
+			{Text: "请求间隔（秒）", Widget: sleep, HintText: "注：请求间隔用于外部waf频率过高会封ip时候选择，使用时结合工作线程计算频率"},
 		},
 	}
 	// cancel
@@ -304,10 +310,13 @@ func MakeRunForm(w fyne.Window, outputCh chan string, resultCh chan *worker.Resu
 			workersText := strings.TrimSpace(workers.Text)
 			worksNum, _ := strconv.Atoi(workersText)
 
+			sleepText := strings.TrimSpace(sleep.Text)
+			sleepNum, _ := strconv.Atoi(sleepText)
+
 			statusCode := strings.TrimSpace(statusCode.Text)
 			statusCodeI, _ := strconv.Atoi(statusCode)
 
-			err := run(target.Text, reqHost.Text, worksNum, statusCodeI, resultCh, stopCh)
+			err := run(target.Text, reqHost.Text, worksNum,sleepNum, statusCodeI, resultCh, stopCh)
 			if err != nil {
 				outputCh <- err.Error()
 			}
@@ -460,7 +469,7 @@ func MakeTestCaseTab(w fyne.Window) fyne.CanvasObject {
 	return container.NewBorder(tableFilterForm, nil, nil, exportBtn, table)
 }
 
-func run(target, mHost string, c, statusCode int, resultCh chan *worker.Result, stopCh chan struct{}) error {
+func run(target, mHost string, c,sleepNum, statusCode int, resultCh chan *worker.Result, stopCh chan struct{}) error {
 	var addr string
 	var isHttps bool
 
@@ -489,6 +498,7 @@ func run(target, mHost string, c, statusCode int, resultCh chan *worker.Result,
 		allTestData,
 		blockStatusCode,
 		worker.WithConcurrence(c),
+		worker.WithSleep(sleepNum),
 		worker.WithReqHost(mHost),
 		worker.WithUseEmbedFS(true), // use embed test case fs when glob is empty
 		worker.WithResultCh(resultCh),
diff --git a/worker/worker.go b/worker/worker.go
index d11dd56f..557b6274 100644
--- a/worker/worker.go
+++ b/worker/worker.go
@@ -21,6 +21,7 @@ type Worker struct {
 	cancel context.CancelFunc
 
 	concurrence   int // concurrent connections
+	sleep         int // concurrent connections
 	fileList      []string
 	jobs          chan *Job
 	jobResult     chan *Job
@@ -70,6 +71,12 @@ func WithConcurrence(c int) WorkerOption {
 	}
 }
 
+func WithSleep(c int) WorkerOption {
+	return func(w *Worker) {
+		w.sleep = c
+	}
+}
+
 func WithResultCh(ch chan *Result) WorkerOption {
 	return func(w *Worker) {
 		w.resultCh = ch
@@ -95,6 +102,7 @@ func NewWorker(
 ) *Worker {
 	w := &Worker{
 		concurrence: 10, // default 10
+		sleep: 0, // default 10
 
 		// payloads
 		fileList: fileList,
@@ -185,6 +193,9 @@ func (w *Worker) runWorker() {
 			defer func() {
 				w.jobResult <- job
 			}()
+			if w.sleep >0 {
+				time.Sleep(time.Duration(w.sleep) * time.Second) // 这里可以选择在工作中间或之前添加 sleep
+			}
 			filePath := job.FilePath
 			req := new(blazehttp.Request)
 			if w.useEmbedFS {