Professional Chinese medicine practitioners in the patients to supplement Yin essence, often will grasp a certain degree, will not damage to the patient’s yang, so generally do not have to worry about Yin supplement more will hurt Yang. Yin tonic often has a sweet cold or salty cold nature, unlike the more bitter and cold nature of the product, some too bitter and cold of the product of the attack down the ability to clinically did not grasp the dosage is indeed easy to injure the yang qi. Sweet and cold or salty and cold nature of the yin tonic is relatively not easy to damage the body’s yang qi, so do not have to worry. It should be noted that yin tonic Chinese medicine is generally easy to nourish and greasy to hinder the spleen, which will affect the spleen and stomach’s function of transportation and digestion, so clinicians will take into account the spleen and stomach when using yin tonic medicines. Patients should adopt reasonable dietary habits and habits of rest and relaxation, increase exercise to improve immunity, and do not use medication on their own.