Cancer Hospital of China Academy of Medical Sciences reported that the annual survival rate of 206 cases of breast-conserving surgery 10 was 80.0%, and the local recurrence rate of 10 was 7.7%, which was the same as that of foreign reports. In 2002_ 10, The New England Journal of Medicine also published two large random sample follow-up reports on the treatment of early breast cancer. Veronesi et al. showed that the survival rate was 58.3% and 58.8% respectively, and the mortality rate caused by various reasons was 465,438 0.7% in breast-conserving group and 465,438 0.2% in radical treatment group (P = 65,438 0.0). The mortality caused by breast cancer was 26.65438 0% and 24.3% respectively (P = 0.8). Because the long-term survival rate of the two groups is the same, breast-conserving surgery is the first choice for patients with relatively small breast cancer, which also proves the long-term good effect of breast-conserving surgery.