The main difference between before and after breast reduction is that the breasts are significantly smaller and more aesthetically pleasing after surgery compared to before; Breast reduction is the main treatment for enlarged breasts, which involves removing excess breast tissue and breast skin to reshape the breasts. However, breast reduction may cause bleeding, hematoma, and most likely result in bilateral breast asymmetry, as well as necrosis of the patient’s nipple and areola. After breast reduction surgery, we should always pay attention to the condition of the patient’s drainage tube, pay attention to whether there is bleeding and infection; we should pay attention to minimize the movement of the breast gland to avoid excessive movement causing the breast gland to bleed again, which will affect the improvement and recovery of the condition. It is recommended to think carefully before undergoing breast reduction surgery and choose an authoritative hospital and specialist for treatment.