What exactly is the harm of sour jujube nut is not clear at present, and there are no relevant clinical reports. The efficacy of this drug is to calm the spirit and astringent sweat, benefit the liver and nourish the heart, etc. It can be used for palpitations (rapid heartbeat, often accompanied by panic) and other evidence. Sour jujube kernel is the dried mature seeds of sour jujube in the family of Rhamnaceae, which is flat and warm in nature, sweet and sour in flavor, and belongs to the heart, liver and gallbladder meridians. Sour jujube kernel specific what harm is not yet clear, there is no relevant evidence-based and clinical reports. The efficacy of sour jujube kernel is to nourish the heart and tonify the liver, tranquilize the heart and tranquilize the mind, astringent sweating, and promote the production of fluids, and it is mostly used in the treatment of deficiency and insomnia (emptiness and irritability, unable to sleep), palpitation and dreaming (palpitations and frequent dreaming), body weakness and excessive sweating, and fluid injury and thirst. Sour jujube seed should be applied under the guidance of a traditional Chinese medicine practitioner’s diagnosis, and should not be taken on its own to avoid causing adverse consequences.