Kidney deficiency refers to insufficiency of kidney essence, yin and yang, and can be categorized into kidney yang deficiency and kidney yin deficiency, etc. Symptoms of kidney yang deficiency are lumbago, chills, and fear of cold, etc. Symptoms of kidney yin deficiency are dryness and heat, night sweating (sweating abnormally after going to sleep and stopping after waking up), dizziness, and tinnitus. 1. Kidney yang deficiency: yang deficiency will appear with pale face, fear of cold, cold hands and feet, long and clear urine, nocturia, impotence and premature ejaculation, slippery semen and cold semen. 2. Kidney yin deficiency: yin deficiency is prone to internal heat, there will be soreness and weakness of the waist and knees, weakness of the legs, irritability, dizziness, tinnitus, emaciation, insomnia, zygomatic red (cheeks and zygomatic bone color reddish), hot flashes, night sweats, dry throat, hyperactive libido and so on. If you have the above symptoms, it is recommended that you go to the hospital for timely consultation, so that the doctor can identify the symptoms and give standardized treatment. Do not diagnose and treat on your own, in order to avoid the wrong diagnosis and medication causing damage to the body.