From the perspective of Chinese medicine, sleep dreams actually belong to the heart and spleen two deficiencies or heart deficiency and timidity, or the heart and kidney do not cross. The specific reasons are as follows: 1, the heart and spleen two deficiencies, that is, the spleen is the source of qi and blood biochemical, after the spleen deficiency of qi and blood biochemical is not enough, the heart is the main blood, qi and blood biochemical is not enough, coupled with the heart to promote the blood is not enough, the body qi and blood running is not enough, the brain moistening function is not enough, after the brain lost moistening, there will be insomnia, bad sleep performance; 2, the heart deficiency timid, the heart function is not good or timid, these patients will appear fearful dreams These patients will have fearful dreams, they will lose things in their dreams, or have very fearful dreams, which belong to heart deficiency and timidity; 3, heart and kidney do not intersect, heart yin cannot descend, kidney and kidney yin deficiency, deficiency fire on the inflammation, heart yin and kidney fire are not connected, there is kidney water can not help heart fire, heart and kidney do not intersect, affect the mind, appearing dreamy performance.