Breasts are what human beings depend on for reproduction, and they are also where women’s charm and confidence lie. It is a woman’s nature to love beauty, so we often see women with healthy breasts trying to make their breasts more uplifted, full and attractive through cosmetic surgery. However, for women who unfortunately suffered from breast cancer and had their breasts removed, breast reconstruction means more than beauty, but gaining confidence in life. Breast reconstruction refers to the reconstruction of the breast after breast loss due to various reasons. Breast cancer is the most common tumor of female breast. In recent years, the incidence of breast cancer in China has been increasing year by year, accounting for 7-10% of all kinds of malignant tumors in the body, and it has become the first of all malignant tumors in women, and the age of incidence tends to be younger. With the increasing awareness of breast cancer, the early detection rate of breast cancer patients has increased significantly, and with the improvement of treatment and the application of adjuvant therapy, the survival rate of breast cancer patients has been greatly improved, and at the same time, the quality of life after surgery has also become more demanding. However, post-operative breast cancer patients have missing breasts, “flat” breasts, or even “clothesline-like” chest wall deformities, subclavian depression deformities, and anterior axillary fold deformities, which not only cause physiological defects, but also cause patients to have a strong sense of inferiority. In addition, it is a great psychological burden for young women, who are reluctant to socialize, lose interest in life and have their family life affected. Therefore, breast reconstruction is of great importance for women with mastectomy. Generally speaking, there is no strict age limit for breast reconstruction. For women in China, breast reconstruction can be done before the age of 60, without serious organic lesions. Depending on the timing of breast reconstruction, there are two types of breast reconstruction: immediate breast reconstruction and delayed breast reconstruction. Immediate breast reconstruction refers to the reconstruction and repair of the breast at the same time as the mastectomy. It has the following significant advantages: 1) removal and reconstruction are completed in one visit, reducing hospitalization time and costs; 2) the patient does not have to experience the psychological pain of losing a breast; and 3) the shape of the reconstructed breast is better. It does not delay adjuvant radiation therapy or chemotherapy, nor does it increase local recurrence. Immediate breast reconstruction can be performed except for those with distant metastases or contraindications to surgery. Delayed breast reconstruction can be performed at any time after mastectomy, usually 9 months after surgery, because chemotherapy and radiation can be completed during this time. In some patients with advanced disease requiring extensive radiation and chemotherapy, delayed breast reconstruction may be considered after the disease has stabilized. The methods of breast reconstruction are grouped into two main categories 1. Application of breast implants, i.e. silicone gel, saline breast implants and skin soft tissue expanders. It is suitable for patients with small reconstructed breast volume, good local soft tissue coverage, unwilling to sacrifice autologous tissue from other parts of the body or with sufficient local tissue. 2.Application of autologous tissue breast reconstruction is to use own tissues as the donor area and use the method of tissue transplantation for breast reconstruction. The breast reconstructed by autologous tissue transplantation has the following advantages: (1) it can make full use of the patient’s autologous tissue; (2) it can avoid a series of complications that may be brought about by prosthesis; (3) it has a good texture, is easy to shape, has a good sense of sagging, and can correct subclavian depression and anterior axillary wall deformity; (4) it can not only tolerate post-operative radiation therapy, but also be used for patients who have received radiation therapy and have recurrence of the deformity. (5) Autologous tissues with good blood flow can promote the healing of bad wounds and ulcers. (5) Autologous tissues with good blood flow can facilitate the healing of malignant wounds and ulcers. The most commonly used ones are: transverse rectus abdominis muscle flap, inferior abdominal wall arteriovenous flap, latissimus dorsi muscle flap, gluteus maximus muscle flap, etc. Generally speaking, the reconstructed breast is shaped according to the contralateral breast. If the contralateral breast is too large, too small or sagging, the reconstructed breast cannot be symmetrical with it, then a breast reduction, augmentation or breast fixation will be needed. Nipple areola reconstruction is an integral part of breast reconstruction. Nipple reconstruction can be done at the same time as breast reconstruction, but mostly after the final stabilization of the bilateral breast shape. Nipple areola reconstruction is the finishing touch and the last step of breast reconstruction. Areola reconstruction can be done by free skin grafting or tattooing techniques. The reconstructed breast can generally regain its sensation about one year after surgery. Nowadays, breast reconstruction after breast cancer surgery is technically mature, but the only obstacle is the lack of patient awareness about it. Women who have undergone or are about to undergo mastectomy should choose the right timing and method of surgery to reconstruct their breasts, restore their femininity and regain their self-confidence.