This paper summarizes professor XUAN Guowei's clinical experience in treating melasma from the perspective of kidney deficiency with vigorous fire， and scorching the collaterals to form stasis. It is proposed that the core pathogenesis of melasma is kidney deficiency with vigorous fire， along with the scorching of collaterals to form stasis， for which the the core therapeutic principle is enriching the kidney and subduing fire， combined with invigorating blood and dissolving stasis. In clinical practice， the self-formulated Xiaoban Decoction （消斑汤） is utilized as the foundational formula， complemented by external therapies such as acupuncture and moxibustion， acupoint injection， and the external application of Chinese herbal medicine. Furthermore， emphasis is placed on daily care and regulation， including strict sun protection， maintaining a joyful mood， ensuring adequate sleep， and following a healthy diet. This paper aims to provide a clinical reference for the treatment of melasma with traditional Chinese medicine.

Objective:To analyze of hot spots and cutting-edge dynamic researches on Traditional Chinese Medicine (TCM) treatment for atopic dermatitis (AD).Methods:The data were abstracted from the literature of AD from CNKI, VIP and WanFang database, during January 1st, 2000 to May 31st, 2021. CiteSpace was used to map Knowledge and visualize information on the law, research hot spots and trendency of TCM in the treatment of atopic dermatitis in recent 20 years.Results:A total of 478 articles were included, mainly from TCM colleges and universities in various provinces. Most of the cooperative institutions have subsidiary relationships, and there is less cross-agency and cross-regional cooperation. Hot research topics included AD, clinical research, TCM therapy, TCM syndrome differentiation, compound Glycyrrhizin, TCM external treatment, and TCM formular, forming 8 main clusters. Integrated Traditional Chinese and Western Medicine was the developing trend in the treatment of AD, and the establishment of animal models to evaluate the therapeutic effect is the research frontier.Conclusion:Knowledge mapping can show the evolution path, research hotspot and frontier of TCM in the treatment of AD, and lay a foundation for high quality researches.