diff --git a/runtime/python/libtorch/funasr_torch/utils/postprocess_utils.py b/runtime/python/libtorch/funasr_torch/utils/postprocess_utils.py
index 3f8d9999e..34180841c 100644
--- a/runtime/python/libtorch/funasr_torch/utils/postprocess_utils.py
+++ b/runtime/python/libtorch/funasr_torch/utils/postprocess_utils.py
@@ -106,17 +106,18 @@ def abbr_dispose(words: List[Any], time_stamp: List[List] = None) -> List[Any]:
         if num in abbr_begin:
             if time_stamp is not None:
                 begin = time_stamp[ts_nums[num]][0]
-            word_lists.append(words[num].upper())
+            abbr_word = words[num].upper()
             num += 1
             while num < words_size:
                 if num in abbr_end:
-                    word_lists.append(words[num].upper())
+                    abbr_word += words[num].upper()
                     last_num = num
                     break
                 else:
                     if words[num].encode("utf-8").isalpha():
-                        word_lists.append(words[num].upper())
+                        abbr_word += words[num].upper()
                 num += 1
+            word_lists.append(abbr_word)
             if time_stamp is not None:
                 end = time_stamp[ts_nums[num]][1]
                 ts_lists.append([begin, end])
diff --git a/runtime/python/onnxruntime/funasr_onnx/utils/postprocess_utils.py b/runtime/python/onnxruntime/funasr_onnx/utils/postprocess_utils.py
index 343ed383a..3a62afee6 100644
--- a/runtime/python/onnxruntime/funasr_onnx/utils/postprocess_utils.py
+++ b/runtime/python/onnxruntime/funasr_onnx/utils/postprocess_utils.py
@@ -108,17 +108,18 @@ def abbr_dispose(words: List[Any], time_stamp: List[List] = None) -> List[Any]:
         if num in abbr_begin:
             if time_stamp is not None:
                 begin = time_stamp[ts_nums[num]][0]
-            word_lists.append(words[num].upper())
+            abbr_word = words[num].upper()
             num += 1
             while num < words_size:
                 if num in abbr_end:
-                    word_lists.append(words[num].upper())
+                    abbr_word += words[num].upper()
                     last_num = num
                     break
                 else:
                     if words[num].encode("utf-8").isalpha():
-                        word_lists.append(words[num].upper())
+                        abbr_word += words[num].upper()
                 num += 1
+            word_lists.append(abbr_word)
             if time_stamp is not None:
                 end = time_stamp[ts_nums[num]][1]
                 ts_lists.append([begin, end])
diff --git a/tests/test_sentence_postprocess_timestamps.py b/tests/test_sentence_postprocess_timestamps.py
index 0aa6965c7..921495097 100644
--- a/tests/test_sentence_postprocess_timestamps.py
+++ b/tests/test_sentence_postprocess_timestamps.py
@@ -96,6 +96,26 @@ def test_untimed_transcription_still_accepts_filtered_tokens(self):
                     ("你好", ["你", "好"]),
                 )
 
+    def test_spelled_out_letters_are_one_word_with_one_timestamp(self):
+        self.assert_timestamps(
+            ["我", "用", "a", "i", "写", "代", "码"],
+            ["我", "用", "AI", "写", "代", "码"],
+            [[0, 100], [100, 200], [200, 400], [400, 500], [500, 600], [600, 700]],
+        )
+        self.assert_timestamps(
+            ["i", "b", "m", "is", "here"],
+            ["IBM", "is", "here"],
+            [[0, 300], [300, 400], [400, 500]],
+        )
+
+    def test_spelled_out_letters_are_one_word_without_timestamps(self):
+        for path in POSTPROCESS_UTILS:
+            with self.subTest(path=path):
+                self.assertEqual(
+                    _load_sentence_postprocess(path)(["看", "c", "c", "t", "v", "新", "闻"]),
+                    ("看CCTV新闻", ["看", "CCTV", "新", "闻"]),
+                )
+
 
 if __name__ == "__main__":
     unittest.main()