〔Abstract〕 Insomnia belongs to the category of insomnia in traditional Chinese medicine, and is one of the most common diseases or symptoms among the elderly, seriously affecting their quality of life. Professor WU Hongyan has been engaged in the prevention and treatment of elderly diseases with traditional Chinese medicine for nearly 40 years. He has rich clinical experience and has elaborated on the pathogenesis of elderly insomnia based on the theory of "unity of body and spirit". He has proposed a treatment method of "treating from the liver and spleen" and "treating with harmony and duration", with excellent clinical efficacy.