Women with rib pain under the left breast, the first consideration may be due to overexertion or long time sleeping on the stomach and other poor posture, can be improved by adequate rest, change the sleeping position and other methods. If there is no relief, then consider whether there is a recent external impact, causing soft tissue or sternum damage to local pain, pay attention to medical treatment. If all of the above are ruled out, consider whether there are chest diseases, breast diseases, digestive system diseases, etc., and should be examined in detail by a doctor to clarify the cause and then carry out targeted treatment. A chest disease 1, costochondritis: triggering factors are mostly viral infections, chronic strain, external impact, etc., the onset of the left breast pain under the ribs, back of the shoulder, axillary pain with chest tightness and other symptoms, should pay attention to rest, avoid the activity of the left upper limb. Under the guidance of a doctor, anti-infective drugs such as amoxicillin can be applied, but also neurotrophic drugs such as cytarabine, and in severe cases, rib cartilage resection treatment is feasible; 2, pleurisy: the triggering factors are mostly bacteria, fungi and other pathogenic bacteria or autoimmune diseases, etc. After the onset of the disease, in addition to the left breast under rib pain, there can also be chest rib tingling, pulling pain with chest tightness, dyspnea and other symptoms, it is recommended that appropriate changes in position and oxygenation, determine the cause, under the guidance of the doctor intravenous injection of penicillin, cephalosporin, acyclovir and other antibacterial drugs for treatment; 3, other: intercostal neuralgia caused by thoracic spine degeneration or thoracic lesions, etc. can also appear in this case, the onset of the symptoms can also be manifested as back pain, radiating pain to the intercostal and chest or abdomen, severe cases will appear symptoms of restricted activity, should be under the guidance of the doctor for the original disease Treatment, along with the application of carbamazepine, gabapentin, etc., can be used to relieve pain. Or treatment by physical methods such as transcutaneous electrical stimulation, ultraviolet light, ultrasound, etc. In addition, conditions such as pneumothorax and pleural effusion may also cause pain in the ribs under the left breast, which should be combined with other clinical symptoms and examination to confirm the diagnosis and then perform targeted treatment. Second, breast diseases 1, breast hyperplasia: When the pain caused by breast hyperplasia spreads to the ribs, armpits and other locations, it will cause pulling-like pain, while breast lumps can be palpable, for those with severe pain can apply tamoxifen and methyltestosterone for pain relief, pay attention to regular review. Daily attention to adhere to outdoor sports, which can help to enjoy the mood and relieve stress; diet to avoid spicy and stimulating food, balanced nutrition, regular diet, etc.; 2, other: in a few cases, breast tumor infiltration may also cause rib pain, it is recommended to perform mammography, pathological examination and other items for diagnosis, if diagnosed, you need to contact the attending doctor in time, according to the severity and stage of the disease, choose surgery, radiotherapy and chemotherapy for treatment. Chemotherapy and other methods of treatment. Chronic gastritis: Chronic inflammation of the gastric mucosa caused by improper diet, bad habits and drug stimulation, the onset of dull pain in the upper abdomen, burning pain, for female anatomical location will be reflected in the left breast under the rib cage pain, accompanied by acid reflux, belching symptoms, can take Damotidine, Omeprazole to protect the gastric mucosa, pain can be applied when intolerable The pain can be relieved by scopolamine, daily attention to good habits, avoiding tobacco, alcohol, staying up late, spicy food and other stimulating factors; 2, pancreatitis: mostly caused by alcohol, intestinal stones and other factors, the onset of severe pain in the upper abdomen, accompanied by abdominal distension, vomiting and other symptoms, the application of octreotide to inhibit secretion, pethidine to relieve abdominal pain, do not eat during the attack to avoid aggravating the condition, such as pancreatic necrosis infection In case of pancreatic necrosis infection, surgical treatment such as endoscopic drainage, laparoscopic surgery, etc. is required. Other diseases 1, angina: after the onset of angina, there will be rib pain, chest pain with dyspnea, chest tightness and other symptoms, you can apply nitroglycerin and metoprolol to relieve, and then promptly call 120 to the hospital for consultation and treatment, daily attention should be paid to adjust the lifestyle, quit smoking and alcohol, avoid strain; diet pay attention to light, low-fat, eat more vegetables and fruits, maintain a healthy weight, as well as monitoring blood pressure; 2, other: such as bone Soft tissue tumors may also cause rib pain under the left breast, which should be combined with other clinical symptoms and examination to confirm the diagnosis and perform targeted treatment.