In Weisheng Baojian (Treasures on Health), the compatibility of Qihai (CV6) and Zusanli (ST36) was widely used in the medical cases treated with acupuncture and moxibustion. Through analyzing the medical cases and summarizing the rules of acupoint compatibility, it is found that LUO Tianyi's idea of moxibustion at these two acupoints was different from the other medical masters. He combined these two acupoints in line with "spleen and stomach theory", rather than from the perspective of the direct relationship of acupoints with syndromes and zangfu organs. It reflects the diversity in the understanding of the human body and diseases among medical masters. Therefore, in order to analyze the representative understandings of ancient medical masters on the connotation and rules of acupuncture and moxibustion, we cannot simply focus on the summary from acupuncture-moxibustion masters. It is suggested that the analysis should be expended in the entire field of traditional Chinese medicine to explore the general rules of treatment with acupuncture and moxibustion, investigate the differences, and deepen the basic reasons of the distinction.