Girls with breast pain usually do breast ultrasound, mammogram and other tests, if suspected of breast cancer, can also do puncture pathology biopsy for clear judgment. 1. Breast ultrasound: when breast pain occurs, such doctors will usually palpate the breast and surrounding tissues to see if there is any lump, etc. After the initial diagnosis, breast ultrasound can be performed to clearly determine the location of the lump, and the nature of the lump can also be judged. 2. Mammography: For mammography, the breast is mainly clamped on the pallet of the mammography machine, which can clearly observe the internal structure of the breast, and diagnose the tumor that cannot be felt by hand. 3. Breast puncture biopsy pathology examination: if you find nodules in the breast, and the nature of the nodules is not clear, you need to carry out puncture biopsy to make a clear pathology diagnosis. It is recommended that women with chest pain should be examined in the hospital as soon as possible.