Breast category 2 cysts are generally not serious, the corresponding condition is related to the accumulation of fluid, and most of them do not produce significant clinical symptoms and do not have a significant impact on the physical condition. Through breast ultrasonography, molybdenum target examination, etc., it is found that there are fluid lesions in the breast tissue, the shape of the lesions is regular and there is no blood supply, it may be diagnosed as BI-RADS 2. The corresponding lesions do not belong to the serious lesions, and there is no obvious effect on the function of the breast, basically, they will not cause obvious clinical symptoms, and they only need to be regularly reviewed and followed up. Some of the breast cysts may increase in size during the review process, which may cause obvious pain and discomfort. It is necessary to consult a doctor in time for observation, and carry out standardized treatment under the guidance of the clinician after diagnosis, so as to avoid the delay of the condition.