The course of swallowing rehabilitation is related to the type and severity of the primary disease. Patients with mild peripheral nerve injuries may recover within 2 weeks, while patients with severe central nervous system disorders may take up to 6 months or even a lifetime to fully recover. Peripheral Nerve Injury: Swallowing disorders caused by peripheral nerve injury such as Guillain-Barré Syndrome, if the lesion is mild, with standardized treatment, rehabilitation training can lead to faster recovery, and some patients can achieve the goal of rehabilitation in about 2 weeks, and complete independent eating. If the condition is serious, the rehabilitation training time will be prolonged, some patients need to be trained for 3~6 months, and a few patients always have difficulty in completing independent eating, and need to stay in the gastric tube, gastrostomy treatment. Central nerve injury: stroke, brain tumor and other central nerve injury caused by swallowing disorders, usually longer rehabilitation time than peripheral nerve injury, most patients need to be trained for 3~6 months, usually there are patients who can never eat independently. Patients with swallowing disorders need to seek medical treatment in time and under the guidance of a rehabilitation doctor to avoid delays in treatment and training.