Left chest pain is mostly caused by exertion, strenuous exercise, trauma, inflammation and tumors and other diseases, generally need to be treated by rest, drugs and surgery. 1. If caused by exertion and strenuous exercise, you can rest, adjust the breathing to achieve the efficacy of relief; in addition, in the exercise will stimulate the intercostal nerve, this pain is generally more intense, you can take some oral nerve nutrients under the guidance of the physician, such as methylcobalamin, etc., supplemented with local physiotherapy, such as hot compresses, etc., which can play a certain role in the effect. 2. If caused by trauma and inflammation, such as rib fracture, local muscle injury and spontaneous pleurisy, etc., we need to consult the regular hospital in time to confirm the diagnosis, and then carry out external fixation of bone fracture, anti-infection and other targeted treatment. 3. If caused by malignant tumors, it needs to be determined by medical history, chest radiographs, tumor markers and biopsy. The treatment of malignant tumors is more complicated, and generally requires multidisciplinary comprehensive treatment mainly based on surgery under the guidance of professional physicians. The left chest pain, except for the pain caused by exertion and intense exercise, we recommend timely consultation, active symptomatic treatment, to avoid delaying the condition.