Chest discomfort needs to be judged according to the specific location, nature and severity of the specific disease. If the discomfort is behind the sternum in the precordial area or the lower edge of the left mammary gland, you need to consult a cardiologist and do an electrocardiogram to exclude discomfort caused by heart disease, which requires timely treatment and can be life-threatening in serious cases. If the discomfort is bilateral breast, ultrasound examination is needed. The more common is cystic hyperplasia of the breast, which is caused by the disorder of hormone levels in women, and can be relieved by symptomatic treatment. Double lung as well as chest wall diseases can also lead to chest discomfort. If accompanied by coughing and coughing up sputum, you need to go to the hospital to do CT examination of both lungs and make a diagnosis. In either case, you need to go to the hospital and try to achieve timely treatment.