diff --git a/main.go b/main.go
index b740a0d..7854f81 100644
--- a/main.go
+++ b/main.go
@@ -6,8 +6,6 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	md "github.com/JohannesKaufmann/html-to-markdown"
-	"github.com/JohannesKaufmann/html-to-markdown/plugin"
 	"io/ioutil"
 	"net/http"
 	"net/url"
@@ -16,6 +14,9 @@ import (
 	"regexp"
 	"strings"
 	"time"
+
+	md "github.com/JohannesKaufmann/html-to-markdown"
+	"github.com/JohannesKaufmann/html-to-markdown/plugin"
 )
 
 type ResultCode struct {
@@ -95,35 +96,48 @@ func main() {
 
 func fetchFolder(root string, wizUser *WizUser, folder string) error {
 	token := wizUser.Token
-	cbs, err := Fetch(fmt.Sprintf("%s/ks/note/list/category/%s?start=0&count=200&category=%s&orderBy=created",
-		wizUser.KbServer, wizUser.KbGuid, url.PathEscape(folder)), token)
-	if err != nil {
-		return WrapErr("fetch folder", err)
-	}
-	cateResult := new(DocListResult)
-	if err = json.Unmarshal(cbs, cateResult); err != nil {
-		return WrapErr("Unmarshal folder result", err)
-	}
-	if cateResult.ReturnCode != 200 {
-		return WrapErr("fetch folder", err)
-	}
+	start := 0
+	count := 200
+
 	// make root and resource folder
 	parentPath := path.Join(root, folder[1:])
-	if err = os.MkdirAll(parentPath, 0755); err != nil {
+	if err := os.MkdirAll(parentPath, 0755); err != nil {
 		return WrapErr("MkdirAll folder", err)
 	}
 
 	if err := os.MkdirAll(path.Join(parentPath, "index_files"), 0755); err != nil {
 		return WrapErr("MkdirAll index_files", err)
 	}
-	// read docs
-	for _, doc := range cateResult.Result {
-		fmt.Printf("Doc info:\n\tdocGuid: %s\n\ttitle: %s\n\tattachmentCount:%v\n",
-			doc.DocGuid, doc.Title, doc.AttachmentCount)
-		if err := fetchDoc(parentPath, wizUser, doc); err != nil {
-			fmt.Println("fetchDoc err:", err)
+
+	for {
+		cbs, err := Fetch(fmt.Sprintf("%s/ks/note/list/category/%s?start=%d&count=%d&category=%s&orderBy=created",
+			wizUser.KbServer, wizUser.KbGuid, start, count, url.PathEscape(folder)), token)
+		if err != nil {
+			return WrapErr("fetch folder", err)
 		}
-		time.Sleep(100 * time.Millisecond)
+		cateResult := new(DocListResult)
+		if err = json.Unmarshal(cbs, cateResult); err != nil {
+			return WrapErr("Unmarshal folder result", err)
+		}
+		if cateResult.ReturnCode != 200 {
+			return WrapErr("fetch folder", err)
+		}
+
+		if len(cateResult.Result) == 0 {
+			break
+		}
+
+		// read docs
+		for _, doc := range cateResult.Result {
+			fmt.Printf("Doc info:\n\tdocGuid: %s\n\ttitle: %s\n\tattachmentCount:%v\n",
+				doc.DocGuid, doc.Title, doc.AttachmentCount)
+			if err := fetchDoc(parentPath, wizUser, doc); err != nil {
+				fmt.Println("fetchDoc err:", err)
+			}
+			time.Sleep(100 * time.Millisecond)
+		}
+
+		start += len(cateResult.Result)
 	}
 
 	return nil