Drinking eucommia in water has the effect of tonifying the liver and kidney, strengthening the muscles and bones, and stabilizing the fetus. However, the effect of drinking water is limited, and it is not recommended to be used for the treatment of diseases. Cortex Eucommiae is sweet in flavor and warm in nature. It belongs to the liver and kidney meridian. It has the effect of tonifying the liver and kidney, strengthening the muscles and bones, and stabilizing the fetus. It is used for the deficiency of liver and kidney, soreness of waist and knees, weakness of muscles and bones, dizziness, leakage of blood in pregnancy, and restlessness of the fetus. Among them, if you use Cortex Eucommiae for the treatment of lower element deficiency and coldness, impotence of kidney deficiency, dysuria and frequent urination, it is often used together with ginseng, Radix Rehmanniae Praeparata and Bacopa Monnieri; for the treatment of kidney deficiency and lumbar pain and lumbar and knee soreness, it can be combined with walnut meat and bone marrow; for the treatment of kidney qi deficiency, lumbar pain and tinnitus, limb soreness and limb softness, it can be used together with Yanhuisuo and fennel. It should be noted that Cortex Eucommiae should not be used for people with kidney deficiency and fire blazing, and if used, it should be combined with Phellodendron Bark and Zhimu. If there is any discomfort, it is recommended to consult a traditional Chinese medicine practitioner for standardized treatment under the guidance of evidence-based diagnosis to avoid delaying the condition.