The causes of back cramp left chest pain may be related to coronary artery disease, pleurisy, intercostal neuritis, and muscle strain. The presence of back cramp left chest pain requires clarification of the timing of the appearance of the pain, the presence or absence of factors that make it appear or relieve it, and whether the pain is persistent or paroxysmal, etc., which can help to identify the cause of the pain. Some people may be a long time posture or improper position, resulting in the left side of the chest muscle strain, spasm, there may be pain, appropriate rest, massage, etc., will slowly improve, you can not do special treatment. Some people may be pleurisy, costochondritis and other inflammatory stimuli caused by the back of the cramp left chest pain, in the breathing or exercise amplitude may be induced by the pain aggravation, the need for appropriate pain relief treatment, clear cause of the anti-inflammatory treatment and so on. Coronary heart disease patients in emotional fluctuations, activities, exertion, cold, satiety, etc., because of myocardial ischemia and ischemia, there will be thoracic and back pain, the nature of the pain for the boring pain or squeezing pain, can be radiated to the left shoulder, the inner side of the left upper limb. Back cramps left chest pain, need to go to the hospital as soon as possible, clear cause, symptomatic treatment.