The phenomena of dry mouth and insomnia are mostly caused by yin deficiency and fire (deficiency of yin and essence in the body, resulting in hyperactive deficiency fire), heart-kidney disharmony (heart fire and kidney yin deficiency, dysfunction of the physiological functions of the heart and kidneys), loss of nourishment for the heart and spirit, or disturbance of the heart by heat evils. Lotus heart refers to the traditional Chinese medicine lotus heart, which has the function of clearing the heart and tranquilizing the mind (settling the mind by getting rid of the inner heat), communicating with the heart and kidney (the fire of the heart goes down and the water of the kidney goes up, which is mutually restrained), astringing the essence and stopping bleeding, and is cold in nature with a bitter taste, and belongs to the meridian of the heart and the kidney, which, when brewed and drunk in moderation, is able to alleviate the discomforts of disorders of the heart and the kidney, insomnia and spermatorrhea, and dryness of the mouth and tongue. Lotus heart soak and drink, to a certain extent, can relieve dry mouth, insomnia symptoms, but the Chinese medicine is mainly through the role of decoction, soak and drink may be due to the release of active ingredients is limited, will affect the efficacy of the treatment. It should be noted that, lotus heart is bitter cold, weak spleen and stomach should not drink a lot of long-term, and tea can not replace the therapeutic effect of drugs, if you feel sick, it is recommended to seek medical treatment.