The contraindication of longan meat in water is not yet clear, longan meat is sweet, warm, wet stagnation in the fullness, usually the body has stopped drinking, phlegm fire people should be cautious to take longan meat. Longan meat belongs to the Chinese herbal medicine, the pharmacopoeia does not specify the contraindications of longan meat, and there is no relevant literature or research pointing out the contraindications of drinking this product in water. The adverse reactions of this product are not clear. Longan meat belongs to the spleen meridian, heart meridian, sweet taste, warm. It has the effect of tonifying the heart and spleen, tranquilizing the mind and nourishing blood. It is used for qi and blood deficiency, panic, palpitations, blood deficiency and atrophy, forgetfulness and insomnia. Longan meat is usually used to decoct soup for internal use. Tea can play a limited medicinal effect, can not replace the drug treatment of disease. After the discomfort should be timely medical treatment, under the guidance of the doctor to choose the drug treatment, not self-medication.