The swelling and pain above the left breast may be caused by local muscle strain, breast hyperplasia, acute mastitis, etc. You can take Chinese medicines that activate blood circulation, reduce swelling and dissipate lumps and remove heat and toxins (clearing heat and toxins and evil qi from the body), such as blood circulation and pain relief capsule, breast fetish dispersal capsule, Xia Gu Cao granules, etc. 1. Local muscle strain: after strenuous chest expansion exercise, the muscle above the left side of the chest will be damaged due to the pulling of the arm, so there will be pain, you can orally take some Chinese patent medicines such as blood circulation and pain relieving capsule, Panax ginseng tablets and so on. 2. Breast hyperplasia: swelling and pain above the left chest may be caused by breast hyperplasia, which is caused by endocrine disorders due to stress, diet, rest and other reasons. Patients can be treated with Chinese medicines such as Breast Fetish Dispersing Capsules and Breast Dispersing Capsules to reduce swelling and dissipate lumps. 3. Acute mastitis: Acute mastitis is usually related to feeding, and patients may have breast infections due to milk stagnation and bacterial invasion, which can be treated by applying Ruyi Jinhuangxuan externally or taking Xiaku Cao granules orally to remove heat and toxins with proprietary Chinese medicines. Breastfeeding patients are recommended to take medication under the guidance of a doctor to avoid adverse reactions. When the patient has swelling and pain above the left breast, it is recommended to consult a doctor in time to find out the cause of the disease, and then follow the doctor’s instructions for treatment, do not self-medication.