The efficacy of Poria cocos sour jujube kernel tea is to promote water retention and reduce swelling, nourish the heart and benefit the liver, etc., but the effect is limited, generally not up to the therapeutic effect. The contraindications of Poria cocos and sour jujube kernel tea are not clear. Poria has the effect of inducing water retention and eliminating swelling, and seeping dampness. It is mainly used for treating edema, phlegm (pathological products formed by impaired water metabolism), diarrhea in spleen deficiency, palpitation and insomnia. It should be taken with caution in cases of Yin deficiency without dampness and heat, deficiency of cold and essence, and Qi deficiency. Sour date kernel, with the effects of nourishing the heart and liver, tranquilizing the mind, and astringing sweat. It is mainly used in treating blood deficiency, palpitation, dizziness (intense heartbeat, panic), forgetfulness, insomnia, dreaminess, dizziness, spontaneous sweating (involuntary sweating during the daytime, aggravated by sweating with slight movement), night sweating (abnormal sweating after going to sleep, sweating stops after waking up), and thirst, thirst, dryness of throat, etc. It is also used in treating blood deficiency and blood deficiency. Pregnant women as well as those with preeclampsia should not take sour jujube seed in large quantities as a single medicine. Poria sour jujube kernel tea drink if there is any discomfort suggests timely discontinuation of use, timely medical attention.