Insomnia is one of the main manifestations of suboptimal health.It is caused by imbalance between work and rest which leads to the consumption of yin and blood，emotional disorder which leads to the transformation of fire from liver depression，and imbalanced diet habits which lead to the generation of phlegm and dampness.The patients with insomnia mainly present the traditional Chinese medicine(TCM) syndromes of heart deprived of nourishment，fire harassing heart spirit，and qi stagnation and phlegm obstruction.Intervention measures for insomnia should be taken based on syndrome and symptom differentiation.In terms of healthcare based on syndrome differentiation，the method of promoting urination and clearing heat or nourishing yin and reducing fire should be adopted to shorten the time to fall in sleep; the method of tonifying deficiency and restraining mind or replenishing essence and tonifying blood can be taken to improve the sleep quality; and the method of regulating qi movement and resolving phlegm or promoting bile secretion and harmonizing stomach can be taken to dredge stagnation and regulate sleeping and awakening.In terms of healthcare based on symptom differentiation，medicines with tranquilizing and soothing effects can be taken to mitigate restlessness and irritability，and the medicines with the effects of guiding yang into yin can be used to repair the disorder of circadian rhythm.