diff --git a/internal/service/chat_pipeline.go b/internal/service/chat_pipeline.go
index 46e5f28e11..25c435f7e6 100644
--- a/internal/service/chat_pipeline.go
+++ b/internal/service/chat_pipeline.go
@@ -2497,8 +2497,13 @@ func (s *ChatPipelineService) kbPrompt(kbinfos map[string]interface{}, maxTokens
 		cnt += drawNode("Title", getMapString(ck, "docnm_kwd", "document_name"))
 		cnt += drawNode("URL", getMapString(ck, "url"))
 		if meta, ok := ck["document_metadata"].(map[string]interface{}); ok {
-			for k, v := range meta {
-				cnt += drawNode(k, v)
+			keys := make([]string, 0, len(meta))
+			for k := range meta {
+				keys = append(keys, k)
+			}
+			sort.Strings(keys)
+			for _, k := range keys {
+				cnt += drawNode(k, meta[k])
 			}
 		}
 		cnt += "\n└── Content:\n"
diff --git a/internal/service/deep_researcher.go b/internal/service/deep_researcher.go
index c0c45c82d2..be076dbb7e 100644
--- a/internal/service/deep_researcher.go
+++ b/internal/service/deep_researcher.go
@@ -24,6 +24,7 @@ import (
 	"io"
 	"net/http"
 	"regexp"
+	"sort"
 	"strings"
 	"sync"
 	"time"
@@ -760,8 +761,13 @@ func kbPrompt(kbinfos map[string]interface{}, maxTokens int, hashID bool) []stri
 		cnt += drawNode("URL", getMapString(m, "url"))
 
 		if meta, ok := m["document_metadata"].(map[string]interface{}); ok {
-			for k, v := range meta {
-				cnt += drawNode(k, v)
+			keys := make([]string, 0, len(meta))
+			for k := range meta {
+				keys = append(keys, k)
+			}
+			sort.Strings(keys)
+			for _, k := range keys {
+				cnt += drawNode(k, meta[k])
 			}
 		}
 
diff --git a/internal/service/kb_prompt.go b/internal/service/kb_prompt.go
index 8d3ea647ec..1eef85fb80 100644
--- a/internal/service/kb_prompt.go
+++ b/internal/service/kb_prompt.go
@@ -18,6 +18,7 @@ package service
 
 import (
 	"fmt"
+	"sort"
 	"strings"
 
 	"ragflow/internal/tokenizer"
@@ -103,8 +104,13 @@ func formatChunkEntry(ck SourcedChunk, index int) string {
 		fmt.Fprintf(&b, "├── URL: %s\n", collapseNewlines(ck.URL))
 	}
 	if ck.DocumentMetadata != nil {
-		for k, v := range ck.DocumentMetadata {
-			fmt.Fprintf(&b, "├── %s: %v\n", k, collapseNewlines(fmt.Sprint(v)))
+		keys := make([]string, 0, len(ck.DocumentMetadata))
+		for k := range ck.DocumentMetadata {
+			keys = append(keys, k)
+		}
+		sort.Strings(keys)
+		for _, k := range keys {
+			fmt.Fprintf(&b, "├── %s: %v\n", k, collapseNewlines(fmt.Sprint(ck.DocumentMetadata[k])))
 		}
 	}
 	b.WriteString("└── Content:\n")