Pressing pain in the left chest, the common causes are mainly the following: a. Elderly female patients are often accompanied by malignant tumors of the left breast, tumor cells invade the pectoral muscle and the wall layer, and there is a pressing pain in the left chest, the patient can improve the ultrasound examination of the breast and the molybdenum target examination, to clarify the nature of the lesion, and then as soon as possible, carry out the modified radical operation of malignant tumors of the left breast and lymph node dissection, as far as possible to eliminate the cancerous cells from the body, to prolong the patient’s life If the patient’s life is prolonged, the pain of pressing on the left chest will be alleviated. Second, patients with coronary atherosclerotic heart disease may have spasmodic contraction of coronary blood vessels after over exertion, which is manifested as pain in left chest with pressure, and it is necessary to improve coronary arteriography to make clear the severity of stenosis of coronary blood vessels, and perform cardiac stenting implantation when necessary to release the stenosis of coronary blood vessels, restore the smoothness of blood flow, and alleviate the pain of pressing on the left chest. Third, costochondritis may be.