Abstract： This paper introduces the clinical experience of LIN Riyang， deputy chief physician， in treating night sweats from deficiency-cold and damp-fire. As the saying goes，“Yang deficiency leads to spontaneous sweats，and yin deficiency results in night sweats”；the theory of yin deficiency causing night sweats has become the mainstream view. LIN Riyang believes that night sweats mostly belong to yang deficiency，and especially yang deficiency and excessive dampness. Excessive ministerial fire is one of the important syndrome types of yin deficiency causing night sweats， and its pathogenesis is the deficiency cold of the middle and lower energizers，diffusing water-dampness and depression curbing ministerial fire， which leads to excessive ministerial fire going up and making the body fluids go out as night sweats. Its pathological factor is deficiency-cold and damp-fire. The treatment is mainly based on warming yang and removing dampness，restraining and descending excessive ministerial fire. The prescription for the disease is modified Wenshen Huashi Yinhuo Decoction， and it is flexibly modified according to complicated syndromes and seasonal changes. In this way，great therapeutic effect can be realized.