Kidney deficiency has different yin deficiency, yang deficiency, essence deficiency, qi deficiency, etc. A single yin deficiency, yang deficiency is rare, and most of them have both. Therefore, kidney supplementation can not be indiscriminate, indiscriminate supplementation is harmful. 1.Yin deficiency of kidney is manifested as: red face, irritable heart, dry mouth, dry tongue, red tongue, fine pulse, itchy skin, insomnia, dreamy, irritable mood, sore back, weak knees, hot hands and feet, tinnitus, dizziness and other symptoms. 2. Kidney Yang deficiency is manifested as: pale or dark face, lumbar soreness, knee pain, pale tongue, sunken pulse, mental weakness, cold hands and feet, fear of cold and wind, diarrhea, and swelling of the body. Because kidney qi is connected to brain qi, kidney essence is sufficient for brain power to be abundant and intelligence to be high. Since essence deficiency cannot transform qi, and qi deficiency cannot transform god, it naturally affects intelligence. Nowadays, teenagers mature early physiologically due to diet and genetics, while being in this impetuous society, the frivolous fads that are blindly pursued by people and the obscene products that can be seen everywhere, it is easy for people, especially teenagers, to have sexual impulses, and the irresponsible propaganda of the media has become the fuse.