Fresh rehmannia can be consumed by decoction, infusion or mashed juice. When consumed, fresh rehmannia root can be removed from stumps, leaves, roots and impurities, then cleaned, cut into sections and decocted in soup or mashed juice; you can also take fresh rehmannia root, remove impurities and roots, cleaned and cut into sections to dry and soak in water. Fresh rehmannia root is the fresh rhizome of Rehmannia glutinosa, family Gramineae. It is sweet in taste and cold in nature, and enters the lung and stomach meridians. It has the effects of clearing away heat and fire (removing heat and fire from the body), generating fluids to quench thirst (promoting the production of fluids to quench thirst), removing vexation, stopping vomiting, and inducing diuresis. Fresh rehmannia root is often used to alleviate symptoms such as fever and thirst, stomach heat and vomiting, lung heat and cough, as well as feverish drenching (burning and tingling during urination, accompanied by frequent urination and urgency, and discomfort from traction in the abdomen) and astringent pain. It should be noted that the consumption of fresh rehmannia can only play an auxiliary role in relieving the role of improvement, and can not be used to treat the disease, and the spleen and stomach cold (spleen and stomach weakness and cold) of the crowd need to be avoided to avoid the consumption of discomfort symptoms, when the body appears uncomfortable symptoms should be examined and diagnosed in a timely manner in the hospital, clear cause of the disease for targeted treatment to avoid the aggravation of the symptoms of the condition of the disease to avoid misunderstanding caused by the serious impact.