五苓散乃仲景方 ,见于《伤寒论》和《金匮要略》中。综观五苓散的主治 ,大概不外乎外有表证 ,内停水湿 ,症见头痛发热 ,烦渴 ,渴欲饮水但水入即吐 ,小便不利 ,霍乱吐利 ,心下痞 ,脐下动悸 ,吐涎沫而头眩等。而五苓散的功用 ,亦不外乎外解内利 ,即发汗与利小便共施 ,淡渗与气化 Wu Ji San is Zhong Jing Fang, seen in “Treatise on Febrile Diseases” and “Golden Chamber”. Looking at the main points of Wudai San, it is nothing more than the appearance of external evidence, stop water wet, Zheng Jian headache, fever, polydipsia, thirsty desire to drink water but the water into the vomiting, urination, cholera, spit, heart cramps, navel The next move, spit, foam and head dizzy. The function of Wudai San is nothing more than external solution of Nili, that is, a combination of sweating and urination, light infiltration and gasification.