diff --git a/api/core/model_runtime/model_providers/xinference/llm/llm.py b/api/core/model_runtime/model_providers/xinference/llm/llm.py
index 286640079b02a9..0c9d08679ad046 100644
--- a/api/core/model_runtime/model_providers/xinference/llm/llm.py
+++ b/api/core/model_runtime/model_providers/xinference/llm/llm.py
@@ -59,6 +59,7 @@
 from core.model_runtime.model_providers.xinference.xinference_helper import (
     XinferenceHelper,
     XinferenceModelExtraParameter,
+    validate_model_uid,
 )
 from core.model_runtime.utils import helper
 
@@ -114,7 +115,7 @@ def validate_credentials(self, model: str, credentials: dict) -> None:
         }
         """
         try:
-            if "/" in credentials["model_uid"] or "?" in credentials["model_uid"] or "#" in credentials["model_uid"]:
+            if not validate_model_uid(credentials):
                 raise CredentialsValidateFailedError("model_uid should not contain /, ?, or #")
 
             extra_param = XinferenceHelper.get_xinference_extra_parameter(
diff --git a/api/core/model_runtime/model_providers/xinference/rerank/rerank.py b/api/core/model_runtime/model_providers/xinference/rerank/rerank.py
index 8f18bc42d2339d..6368cd76dc97bf 100644
--- a/api/core/model_runtime/model_providers/xinference/rerank/rerank.py
+++ b/api/core/model_runtime/model_providers/xinference/rerank/rerank.py
@@ -15,6 +15,7 @@
 )
 from core.model_runtime.errors.validate import CredentialsValidateFailedError
 from core.model_runtime.model_providers.__base.rerank_model import RerankModel
+from core.model_runtime.model_providers.xinference.xinference_helper import validate_model_uid
 
 
 class XinferenceRerankModel(RerankModel):
@@ -77,10 +78,7 @@ def _invoke(
             )
 
             # score threshold check
-            if score_threshold is not None:
-                if result["relevance_score"] >= score_threshold:
-                    rerank_documents.append(rerank_document)
-            else:
+            if score_threshold is None or result["relevance_score"] >= score_threshold:
                 rerank_documents.append(rerank_document)
 
         return RerankResult(model=model, docs=rerank_documents)
@@ -94,7 +92,7 @@ def validate_credentials(self, model: str, credentials: dict) -> None:
         :return:
         """
         try:
-            if "/" in credentials["model_uid"] or "?" in credentials["model_uid"] or "#" in credentials["model_uid"]:
+            if not validate_model_uid(credentials):
                 raise CredentialsValidateFailedError("model_uid should not contain /, ?, or #")
 
             credentials["server_url"] = credentials["server_url"].removesuffix("/")
diff --git a/api/core/model_runtime/model_providers/xinference/speech2text/speech2text.py b/api/core/model_runtime/model_providers/xinference/speech2text/speech2text.py
index a6c5b8a0a571e9..c5ad38391185a9 100644
--- a/api/core/model_runtime/model_providers/xinference/speech2text/speech2text.py
+++ b/api/core/model_runtime/model_providers/xinference/speech2text/speech2text.py
@@ -14,6 +14,7 @@
 )
 from core.model_runtime.errors.validate import CredentialsValidateFailedError
 from core.model_runtime.model_providers.__base.speech2text_model import Speech2TextModel
+from core.model_runtime.model_providers.xinference.xinference_helper import validate_model_uid
 
 
 class XinferenceSpeech2TextModel(Speech2TextModel):
@@ -42,7 +43,7 @@ def validate_credentials(self, model: str, credentials: dict) -> None:
         :return:
         """
         try:
-            if "/" in credentials["model_uid"] or "?" in credentials["model_uid"] or "#" in credentials["model_uid"]:
+            if not validate_model_uid(credentials):
                 raise CredentialsValidateFailedError("model_uid should not contain /, ?, or #")
 
             credentials["server_url"] = credentials["server_url"].removesuffix("/")
diff --git a/api/core/model_runtime/model_providers/xinference/text_embedding/text_embedding.py b/api/core/model_runtime/model_providers/xinference/text_embedding/text_embedding.py
index 16272391320d55..ddc21b365c1b78 100644
--- a/api/core/model_runtime/model_providers/xinference/text_embedding/text_embedding.py
+++ b/api/core/model_runtime/model_providers/xinference/text_embedding/text_embedding.py
@@ -17,7 +17,7 @@
 )
 from core.model_runtime.errors.validate import CredentialsValidateFailedError
 from core.model_runtime.model_providers.__base.text_embedding_model import TextEmbeddingModel
-from core.model_runtime.model_providers.xinference.xinference_helper import XinferenceHelper
+from core.model_runtime.model_providers.xinference.xinference_helper import XinferenceHelper, validate_model_uid
 
 
 class XinferenceTextEmbeddingModel(TextEmbeddingModel):
@@ -110,7 +110,7 @@ def validate_credentials(self, model: str, credentials: dict) -> None:
         :return:
         """
         try:
-            if "/" in credentials["model_uid"] or "?" in credentials["model_uid"] or "#" in credentials["model_uid"]:
+            if not validate_model_uid(credentials):
                 raise CredentialsValidateFailedError("model_uid should not contain /, ?, or #")
 
             server_url = credentials["server_url"]
diff --git a/api/core/model_runtime/model_providers/xinference/tts/tts.py b/api/core/model_runtime/model_providers/xinference/tts/tts.py
index 81dbe397d2f10c..6290e8551d8020 100644
--- a/api/core/model_runtime/model_providers/xinference/tts/tts.py
+++ b/api/core/model_runtime/model_providers/xinference/tts/tts.py
@@ -15,7 +15,7 @@
 )
 from core.model_runtime.errors.validate import CredentialsValidateFailedError
 from core.model_runtime.model_providers.__base.tts_model import TTSModel
-from core.model_runtime.model_providers.xinference.xinference_helper import XinferenceHelper
+from core.model_runtime.model_providers.xinference.xinference_helper import XinferenceHelper, validate_model_uid
 
 
 class XinferenceText2SpeechModel(TTSModel):
@@ -70,7 +70,7 @@ def validate_credentials(self, model: str, credentials: dict) -> None:
         :return:
         """
         try:
-            if "/" in credentials["model_uid"] or "?" in credentials["model_uid"] or "#" in credentials["model_uid"]:
+            if not validate_model_uid(credentials):
                 raise CredentialsValidateFailedError("model_uid should not contain /, ?, or #")
 
             credentials["server_url"] = credentials["server_url"].removesuffix("/")
diff --git a/api/core/model_runtime/model_providers/xinference/xinference_helper.py b/api/core/model_runtime/model_providers/xinference/xinference_helper.py
index 619ee1492a9272..baa3ccbe8adbc0 100644
--- a/api/core/model_runtime/model_providers/xinference/xinference_helper.py
+++ b/api/core/model_runtime/model_providers/xinference/xinference_helper.py
@@ -132,3 +132,16 @@ def _get_xinference_extra_parameter(server_url: str, model_uid: str, api_key: st
             context_length=context_length,
             model_family=model_family,
         )
+
+
+def validate_model_uid(credentials: dict) -> bool:
+    """
+    Validate the model_uid within the credentials dictionary to ensure it does not
+    contain forbidden characters ("/", "?", "#").
+
+    param credentials: model credentials
+    :return: True if the model_uid does not contain forbidden characters ("/", "?", "#"), else False.
+    """
+    forbidden_characters = ["/", "?", "#"]
+    model_uid = credentials.get("model_uid", "")
+    return not any(char in forbidden_characters for char in model_uid)