Wild Dihuang, also known as Raw Dihuang, can be taken by decoction or pounding juice. Dihuang has the effects of clearing heat and promoting the production of fluids, cooling the blood and stopping bleeding. It can be used as medicine by pounding the juice or decocting it to relieve sore throat, vomiting blood, internal heat and thirst (internal heat accompanied by excessive eating, drinking and urinating), spots and rashes. Raw Dihuang should not be taken by people with cold spleen and stomach and constipation. Raw Dihuang should not be used with quinoa. People who are allergic to Dioscorea should be prohibited from using it. If there is a need to use Radix Rehmanniae Praeparata, it should be used by a professional doctor after diagnosis and treatment, do not use the drug without authorization, and should also avoid long-term use of large quantities of the drug, which may lead to undesirable consequences.