Sweating is a physiological phenomenon of human，but excessive sweating is a kind of pathological manifestations，which is particularly common in the elderly.Perspiration syndrome is discussed in detail in the traditional Chinese medicine since ancient times，and according to different characteristics there are spontaneous sweat and night sweat，sweating of dying，sweating after shivering，yellow sweat and sweating of palms and soles，now treating from spontaneous sweat and night sweat.We recognize that perspiration syndrome is with its unique concept and involves lots of content based on our own experiences and clinical research in recent years，and paths of treatment and use of drugs are different from the theory of ancient Chinese medicine，so we discuss perspiration syndrome newly and update its name and definition，dividing into severe sweat，long sweat in chronic disease and simple excessive sweating.It is to improve clinical curative effect by treatment of illness in a coherent，clear thinking，and integrating Chinese and western medicine through brief discussion of understanding of hyperhidrosis in modern medicine and to build a platform for future communication and deep research.