diff --git a/http.go b/http.go
index 8152d41..d6add53 100644
--- a/http.go
+++ b/http.go
@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"log"
 	"net"
 	"net/http"
 	"slices"
@@ -225,7 +224,6 @@ func (obj *conn2) run() (err error) {
 					var readErr error
 					defer task.readCnl(readErr)
 					_, readErr = io.Copy(pw, rawBody)
-					log.Print(readErr)
 					pw.CloseWithError(readErr)
 					if readErr != nil && readErr != io.EOF && readErr != io.ErrUnexpectedEOF {
 						task.err = tools.WrapError(readErr, "failed to read response body")
diff --git a/response.go b/response.go
index bfd554f..cf2552a 100644
--- a/response.go
+++ b/response.go
@@ -7,7 +7,6 @@ import (
 	"errors"
 	"io"
 	"iter"
-	"log"
 	"net/http"
 	"net/url"
 	"strconv"
@@ -263,10 +262,6 @@ func (obj *Response) ContentType() string {
 	if obj.filePath != "" {
 		return http.DetectContentType(obj.content)
 	}
-	if obj.response.Header == nil {
-		log.Print(obj.response.Header == nil)
-
-	}
 	contentType := obj.response.Header.Get("Content-Type")
 	if contentType == "" {
 		contentType = http.DetectContentType(obj.content)
diff --git a/roundTripper.go b/roundTripper.go
index afe6905..ea043c0 100644
--- a/roundTripper.go
+++ b/roundTripper.go
@@ -5,7 +5,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"log"
 	"net"
 	"strings"
 	"time"
@@ -425,7 +424,6 @@ func (obj *roundTripper) RoundTrip(ctx *Response) (err error) {
 		if task.isNotice {
 			currentRetry--
 		}
-		log.Print(task.err, "  currentRetry: ", currentRetry, !task.suppertRetry())
 	}
 	if currentRetry > maxRetryCount {
 		if task.err == nil {