Medicines for kidney and essence should be applied only if there is kidney deficiency. The problem of kidney deficiency may be kidney essence deficiency, kidney qi deficiency, kidney yin deficiency, kidney yang deficiency, etc. The drugs chosen are different for different conditions. Now they are described as follows: 1. Kidney Qi deficiency. It is manifested as waist and leg weakness, tiredness, dizziness, tinnitus, mental weakness, sexual dysfunction, such as reduced sexual desire, impotence, premature ejaculation, clear and long urine, excessive nocturnal urination, or swelling and other symptoms. It can be treated by applying Jin Kui Kidney Qi Pill and Jin Lock Solid Essence Pill. 2. Kidney Yang deficiency. The symptoms of kidney qi deficiency are further aggravated, and the symptoms of cold fear and cold limbs appear at the same time. It can be treated with Jin Kui Kidney Qi Pill, Jisheng Kidney Qi Pill, Right Return Pill, and Fu Fang Xuanju Capsule, etc. 3. Kidney Yin deficiency. The symptoms are waist soreness and leg weakness, dizziness and tinnitus, dry throat and mouth, irritable heat in the five hearts, hot flashes and night sweats, impotence and premature ejaculation, red tongue with little coating and fine pulse. You can choose the Six Flavored Dihuang Pills, the Great Tonic Yin Pills, the Zuo Gui Pills, the Golden Lock Solid Essence Pills, etc. 4. Kidney essence deficiency. It is manifested as lumbar soreness and leg weakness, thinning of the body, dizziness and tinnitus, sexual dysfunction, etc. It can be treated by GUI Spleen Pill and Liu Wei Di Huang Wan.