Men can take Er Zhi Pill for gray hair caused by liver and kidney yin deficiency has a certain therapeutic effect, for other evidence of gray hair treatment effect is limited. The two pills are made up of two medicines, the ink drought lotus and chasteberry, which have the effect of nourishing yin and stopping bleeding, tonifying the liver and kidney, and are mostly used in the treatment of yin deficiency of the liver and kidney, which can be seen in the symptoms of lumbar and knee pain, dizziness, tinnitus, dry throat and nose, and women’s menstrual period, etc. It is also useful for treating the situation that men’s hair is prematurely white and belongs to the yin deficiency of the liver and kidney. This drug in the dry lotus herb taste sweet, cold, into the kidney to replenish the essence, can benefit the lower and the glory of the upper; chasteberry taste sweet, flat, can benefit the liver and kidney, the two drugs with each other to fill the yin of the liver and kidneys. However, this drug is composed of fewer drugs, for the liver and kidney yin deficiency is more serious patients, but also need to follow the doctor’s instructions with other drugs treatment. The adverse effects and contraindications of this drug are not clear, but the drug is cold, people with loose stools, spleen and stomach cold should avoid taking it, and should not take this drug during the cold and fever. The specific use of the drug should be carried out under the guidance of a traditional Chinese medicine practitioner, and should not be used blindly.