There is no direct relationship between fast or slow beard growth and good kidneys. Because the beard may grow faster or slower depending on the age of the human body. Generally, before the age of 20, the beard grows slowly, and even after puberty, the beard grows slowly. However, after the age of 25, the beard grows faster. But this is not directly related to whether the kidney is good or not, no matter from the point of view of Chinese medicine, or from the point of view of Western medicine, this kind of statement is not based. In addition, for good or bad kidneys, it is necessary to judge according to the method of identification in Chinese medicine, such as through the tongue or pulse, as well as the body’s own reaction to judge.