Isthmusitis is mainly an acute inflammation of the pharyngeal isthmus caused by bacterial or viral infection, which can lead to fever, sore throat and dysphagia, etc. Isthmusitis does not have any special dietary taboos, and mainly focuses on light and nutritious food. As isthmus can lead to sore throat and dysphagia, so during the disease, we should pay attention to change some cooking methods and eating habits; first of all, we can use steaming, boiling, stewing and other methods of cooking food, try to cook the food so that it is soft and easy for the patient to swallow better. Secondly, the meals are mainly light and nutritious food, more fresh vegetables and fruits, on the one hand, can effectively give patients supplemental nutrients, and secondly, can also avoid too spicy food stimulation and aggravation of sore throat and other discomfort symptoms; in addition, we should pay attention to let the patient drink more water, which can alleviate the discomfort in the pharynx. Once the pharyngitis need to go to the hospital in time, under the guidance of the doctor for reasonable treatment.