Sour jujube kernel powder, generally refers to the powder made from sour jujube kernels. Sour jujube kernel powder can be used to treat insomnia caused by deficiency of the heart, liver, yin and blood by drinking water as prescribed by the doctor, and it is recommended that it be taken under the guidance of a physician. Sour jujube kernel has the function of nourishing the heart and tonifying the liver, tranquilizing the heart and tranquillizing the mind, restraining sweat, and generating fluids, and it is often used in the treatment of insomnia, palpitations and dreaming, excessive sweating, and thirst due to deficiency of heat in the body. Sour jujube seed is used to treat deficiency of yin and blood in the heart and liver, loss of nourishment for the heart, palpitations and dizziness due to lack of consciousness (violent heartbeat, panic and restlessness), insomnia and dreaming, etc. It is used together with Rhizoma Ligustici Chuanxiong, Poria, and Rhizoma Zhi Mu to enhance the efficacy of clearing heat and removing vexation and tranquilizing the mind; and it is used with Fructus Schisandrae chinensis, Rhizoma Dioecycis, and Rhizoma Cyperus rotundus to nourish yin and tranquilize the mind. In addition, sour jujube kernel treatment of deficiency sweating (daytime involuntary sweating, sweating aggravated by the slightest movement) night sweating (sweating abnormally after falling asleep, waking up sweating stops), with white peony, schizandra, cornelian cherry; sour jujube kernel and convergence of yin to promote the function of thirst, can be used for thirst and throat dryness of the syndrome of injury to the fluid. It can be used in the case of thirst and dryness of the throat. It should be taken with caution for those who are suffering from solid evils and fire and those who are suffering from slippery discharge. As a traditional Chinese medicine, it is recommended to go to a traditional Chinese medicine hospital under the guidance of a traditional Chinese medicine practitioner, so as not to aggravate the symptoms of insomnia by taking medicines that are not appropriate for the symptoms, or delay the condition.