diff --git a/src/llmtuner/webui/chatter.py b/src/llmtuner/webui/chatter.py
index 41d657ff..255f0fd7 100644
--- a/src/llmtuner/webui/chatter.py
+++ b/src/llmtuner/webui/chatter.py
@@ -106,6 +106,7 @@ class WebChatModel(ChatModel):
     def predict(
         self,
         chatbot: List[Tuple[str, str]],
+        role: str,
         query: str,
         messages: Sequence[Tuple[str, str]],
         system: str,
@@ -115,7 +116,7 @@ class WebChatModel(ChatModel):
         temperature: float,
     ) -> Generator[Tuple[Sequence[Tuple[str, str]], Sequence[Tuple[str, str]]], None, None]:
         chatbot.append([query, ""])
-        query_messages = messages + [{"role": Role.USER.value, "content": query}]
+        query_messages = messages + [{"role": role, "content": query}]
         response = ""
         for new_text in self.stream_chat(
             query_messages, system, tools, max_new_tokens=max_new_tokens, top_p=top_p, temperature=temperature
diff --git a/src/llmtuner/webui/components/chatbot.py b/src/llmtuner/webui/components/chatbot.py
index fe739dd0..802954da 100644
--- a/src/llmtuner/webui/components/chatbot.py
+++ b/src/llmtuner/webui/components/chatbot.py
@@ -2,6 +2,7 @@ from typing import TYPE_CHECKING, Dict, Optional, Tuple
 
 import gradio as gr
 
+from ...data import Role
 from ..utils import check_json_schema
 
 
@@ -22,6 +23,7 @@ def create_chat_box(
             with gr.Column(scale=4):
                 system = gr.Textbox(show_label=False)
                 tools = gr.Textbox(show_label=False, lines=2)
+                role = gr.Dropdown(choices=[Role.USER.value, Role.OBSERVATION.value], value=Role.USER.value)
                 query = gr.Textbox(show_label=False, lines=8)
                 submit_btn = gr.Button(variant="primary")
 
@@ -36,7 +38,7 @@ def create_chat_box(
 
     submit_btn.click(
         engine.chatter.predict,
-        [chatbot, query, messages, system, tools, max_new_tokens, top_p, temperature],
+        [chatbot, role, query, messages, system, tools, max_new_tokens, top_p, temperature],
         [chatbot, messages],
         show_progress=True,
     ).then(lambda: gr.update(value=""), outputs=[query])
@@ -50,6 +52,7 @@ def create_chat_box(
         dict(
             system=system,
             tools=tools,
+            role=role,
             query=query,
             submit_btn=submit_btn,
             clear_btn=clear_btn,
diff --git a/src/llmtuner/webui/locales.py b/src/llmtuner/webui/locales.py
index 6ad5fc7c..e2a1aa81 100644
--- a/src/llmtuner/webui/locales.py
+++ b/src/llmtuner/webui/locales.py
@@ -861,6 +861,17 @@ LOCALES = {
             "placeholder": "工具列表（非必填）",
         },
     },
+    "role": {
+        "en": {
+            "label": "Role",
+        },
+        "ru": {
+            "label": "Роль",
+        },
+        "zh": {
+            "label": "角色",
+        },
+    },
     "query": {
         "en": {
             "placeholder": "Input...",