Breast cysts are not solid tumors, they resemble a “blister-like” structure and the contents of the cyst are mostly liquid. Simple cysts occur during the non-lactation period and cumulus cysts occur during the lactation period. Some breast cysts are self-limiting, and some of them can be absorbed naturally. For gradually increasing cysts, drug control or surgical methods can be considered. 1, symptoms: understanding the symptoms of breast cyst has a very important role in self-examination of breast cyst, and the general performance is as follows: (1) breast lumps. Breast lumps are a more obvious symptom of breast cysts, because breast lumps produced by breast cysts are usually unilateral single lumps and small at the beginning. In case of multiple cysts, cystic hyperplasia of the breast should be considered and closely followed. (2) Swollen and painful breasts. Breast swelling and pain are not very obvious, and some are accompanied by painful pressure. (3) Overflowing fluid. Sometimes squeezing around the areola, the nipple can be seen to overflow with plasma or milk-white liquid. 2, treatment methods: the treatment methods of breast cysts are divided into Chinese medicine treatment methods and Western medicine treatment methods. The Chinese medicine treatment method is mainly to use the Chinese medicine method to regulate, slowly control and eliminate the breast cysts. Western medicine treatment mainly takes the form of surgery. Both of them have their own advantages and disadvantages and are very effective treatments. Patients should follow the guidance of their doctors and choose the most suitable treatment according to their condition. Breast cyst is a relatively common female disease, women should do a good job of preventing breast cysts in daily life, so as to prevent it before it happens.