Breast ptosis can be categorized into mild breast ptosis and moderate to severe breast ptosis, which is usually manifested by the nipple being below the normal level of the lower crease of the breast. 1. Mild ptosis: Mild ptosis of the breast, manifested as the nipple at the level of the lower crease of the breast or a slightly lower position, usually the lower pole of the breast exceeds the lower crease of the breast by 1-2cm, from the appearance of the appearance of the clinical symptoms are not very obvious, just may feel the curves of the aesthetic sense of a slight change. 2. Moderate and severe ptosis: for moderate and severe breast ptosis, the nipple will be below the inframammary fold, moderate ptosis usually has the lower pole of the breast exceeding the inframammary fold by 2-3cm, and severe ptosis: the lower pole of the breast exceeding the inframammary fold by 4-10cm, and the patient will have a series of symptoms such as asymmetry of the breast, low nipple, eczema in the inframammary fold, pain in the chest and pain in the back, etc. If the patient has the above symptoms, it is important to be alerted to the fact that there is no change of the breasts. If patients have the above performance, they should be alert to breast ptosis, and need to consult a doctor for examination in time, and standardize the treatment under the guidance of a doctor.