Many diseases can lead to pain inside the ribs, depending on the actual situation of the patient, for example, the following: a. caused by trauma, due to trauma leading to rib fractures, pain and discomfort can occur, and the diagnosis can be clarified by X-ray, CT and other imaging examinations. Pulmonary infection, near the pleura, can be accompanied by cough, sputum and fever, in addition to pain. Bone metastasis of lung cancer or breast cancer is caused by patients with history of tumor, mostly appearing after the disease progresses, and can be clearly diagnosed by CT examination or bone scan, and should be treated actively for the original disease and symptomatic pain treatment. Fourth, it appears after improper activity or strenuous exercise. This condition generally does not require special treatment, and the symptoms can gradually improve after paying attention to rest. V. Intercostal neuritis, heart disease, hepatobiliary disease may also appear, which should be combined with the patient’s symptoms, physical signs and auxiliary examinations. Therefore, it is important to pay attention to the above symptoms when they appear and seek timely medical treatment.