Excessive sweating that is not related to labor activities or in a hot environment, according to modern medicine, can be a sign of some dangerous diseases. According to the theory of Traditional Chinese Medicine (TCM), sweat is derived from body fluids related to the blood, which is the fluid of the zang organ Heart. Sweat is divided into two types: hyperhidrosis(自汗- excessive sweating) and nocturnal hyperhidrosis (盗汗- night sweats). TCM has a lot of experience in the treatment of sweating diseases. 表虚 (external deficiency) induced Hyperhidrosis can be treated with Gui Zhi Tang (桂枝湯), if it’s caused by 阳明热 盛(large intestine’s excess heat), use Baihu Tang (白虎湯), if it’s Qi-deficiency induced, use Yu Ping Feng San (玉屏風散); Nocturnal hyperhidrosis caused by 阴血不足 (Yin - blood deficiency) can be treated with Guipitang (归脾汤) - adding Ossa Draconis, Concha Ostreae (煅牡蛎); use Dang Gui Liu Huang Tang(当归六黄汤) if it’s caused by excess heat due to Yin deficiency.