Abstract: Specialist training is the only way to support the development of disciplines and the training of specialists.At present,the United States has established a relatively complete training system for tumor specialists covering all cancers,especially the breast specialists.The American Society of Surgical Oncology has approved 46 medical centers as training bases to help surgeons grow into breast specialists.In this article,a detailed introduction of the breast oncology fellowship training system in the United States of America is presented which includes its objects and requirements.It is very valuable and meaningful to depict an entire system of foreign fellowship training for one reason that a domestic fellowship training about breast can be built up based on their experience and medical resource in our country.

Key words: Fellowship training, Breast surgery, China, United States of America