Experimental Group:Participants in this group will receive traditional swallowing rehabilitation combined with chin tuck against resistance (CTAR) training to enhance suprahyoid muscle strength and improve swallowing function.

Control Group:Participants in this group will receive only traditional swallowing rehabilitation without any additional CTAR training.

Both groups of patients will receive traditional swallowing rehabilitation therapy; however, the experimental group will additionally perform CTAR exercises. The procedure is as follows:Ask the patient to sit, then, press the chin firmly against the inflatable rubber ball, for isometric exercise, the chin is pressed down against the resistance of the ball and held for 60 seconds as one round, with a total of three rounds. And for isotonic exercise, the chin presses down against the resistance of the ball and holds for one second per repetition, with a total of 30 repetitions. Performing both isometric and isotonic exercises constitutes one set of exercises.

For isometric exercise, the chin is pressed down against the resistance of the ball and held for 60 seconds as one round, with a total of three rounds. For isotonic exercise, the chin presses down against the resistance of the ball and holds for one second per repetition, with a total of 30 repetitions.

Use the Functional Oral Intake Scale(FOIS) 、calculating the residual volume of 60 ml of water, swallowing speed, and whether a nasogastric tube is in place to assess swallowing function. FOIS items range from 1 to 7，the higer the better swallowing function。The less residual water and fast swallowing speed(ml/sec), the better the swallowing function. The absence of a nasogastric tube also indicates improvement in swallowing.

Use the Patient Health Questionnaire(PHQ-9) to assess depression，the score ranges from 0 to 27 points: 0-4 indicates no depressive symptoms, 5-9 indicates mild depression, 10-14 indicates moderate depression, 15-19 indicates moderately severe depression, and 20-27 indicates severe depression.