The diagnosis of intercostal neuritis is an exclusionary diagnosis made on the basis of clinical symptoms, to clarify whether the patient’s clinical symptoms warrant consideration of the possibility of intercostal neuritis. For example, the patient is experiencing paroxysmal pain in the quarter rib area, in a relatively limited location, presenting as paroxysmal sharp stabbing or electric shock-like pain or throbbing pain, with each episode lasting only a few seconds, which can recur intermittently. In addition, to exclude other diseases, such as lung diseases, pleural diseases and heart diseases, it is necessary to visit cardiovascular medicine, respiratory medicine and cardiothoracic surgery departments to improve the electrocardiogram, cardiac enzymes, chest CT and other related examinations to exclude organic diseases before intercostal neuritis can be considered. The patient should take rest, strengthen nutrition, keep warm and avoid getting cold.