If the chest bone is painful when pressed, the cause should be clarified firstly. Common causes include fracture, costochondritis, blood disease, sternal tumor, etc., and symptomatic and causative treatments should be carried out. 1. Fracture: Fracture occurs in the chest due to various reasons, pain and pressure in the fracture area, and in serious cases, the broken end of the fracture may even puncture the lungs and damage blood vessels and nerves. Generally speaking, chest wall fracture is mostly closed fracture, which can be treated with external fixation of chest wall and diclofenac sodium for pain relief; open fracture should be treated with emergency surgery, and antibiotics such as cefuroxime and other anti-infective treatments should be given after surgery. 2. Costal chondritis: inflammatory diseases occurring in the rib cartilage, should avoid the activity of the affected side of the upper limb, pay attention to rest, apply diclofenac sodium for pain relief, vitamin B1 nutrient nerves, glucocorticoids, such as prednisone closure treatment and other symptomatic treatment, some of the patients with symptomatic treatment is ineffective, or suspected of malignant pathology, can be considered for surgical treatment. 3. Hematological diseases: when suffering from leukemia, leukocytes infiltrate the sternum and there will be sternal pressure and pain, the main treatment is based on chemotherapy, and bone marrow transplantation can achieve curative effect. 4. Sternum tumor: including benign tumor and malignant tumor. Benign tumors are mostly treated by local excision or scraping, and malignant tumors may be treated by chemotherapy and local radiotherapy in addition to surgical excision. The pain of chest bone is considered to have many pathologic factors, so we must pay enough attention to it and go to the hospital as soon as possible to get a clear diagnosis.