(1) Gypsum is the best medicine for Yangming heat syndrome, and it is effective for people with thirst, red pulse, yellow tongue, excessive sweating due to body heat or inability to sweat and sore throat. (2) Zhang Xichun, author of Medical Fever, can refer to this book for the best usage of gypsum. (3) Proper differentiation of symptoms and signs, taking a large dose (60 ~ 120g per dose) as the contribution. Deficiency syndrome is not available. (4) The taboo of using gypsum in Wu Jutong's Treatise on Febrile Diseases should not be too restrained. (5) Sweating with gypsum is effective, but ineffective. Self-taught Chinese medicine (internal medicine) for more than 40 years, I have the most "feelings" for plaster. I pretend to make the above brief statement, and I hope my colleagues will correct me. Zhou Guoqing, Xiangcheng County, Henan Province