The cricopharyngeal muscles are a group of sphincters that maintain a tense contraction separating the pharynx from the esophagus. At rest, the cricopharyngeal muscles produce a resting pressure of 20-60 mmHg, preventing food reflux into the pharynx and preventing air aspiration into the stomach during inspiration. The cricopharyngeal muscle is dually innervated by the sympathetic and vagus nerves, and functional or organic impairment in the conduction pathways of these two functionally opposite autonomic nerves from the center to the endings of the cricopharyngeal muscle may result in dysphagia. The resulting swallowing disorder is characterized pathologically by the inability of the cricopharyngeal muscles to relax, or to relax in an uncoordinated sequence. The symptoms are characterized by retention of food in the pharynx, inability to swallow, and in severe cases, inability to swallow saliva, and severe salivation, with the patient feeding through a nasal feeding tube. The prevalence of cricopharyngeal dyskinesia in swallowing disorders due to cerebrovascular disease ranges from 6 to 61%. Most of the symptoms come on suddenly or recur intermittently, and many patients quickly progress to the point where they cannot pass food down the pharynx after swallowing, and the pharynx cannot retain food, but only return to the nasopharynx or larynx. Most patients need to wear a nasal feeding tube for life, which seriously affects their quality of life. Previous treatments have been based on electrical stimulation with little success, and in severe cases surgical cricopharyngeal myotomy is required. Dilatation therapy has a positive effect on such as congenital stenosis, postoperative anastomotic stenosis, chemical burn stenosis, simple scar stenosis after tumor radiotherapy, digestive stenosis, and cardia loss retardation, etc. The commonly used dilatation methods are mechanical dilation, and catheter balloon dilation. Using catheter balloon injection to fill the balloon and pull it out from top to bottom, changing the balloon diameter by the change of water injection and gradually expanding the cricopharyngeal muscle is an innovative application. This new technique combines basic swallowing function training, ingestion training, and Vitalstmi swallowing electrical stimulation therapy, and the diversity of methods has improved the examination and treatment of swallowing in our hospital.