Different types of back pain and leg weakness caused by kidney deficiency have different medications. It is important to be treated by a doctor after taking medication. The common types of kidney deficiency are kidney yin deficiency, kidney yang deficiency and kidney qi deficiency. Kidney yin deficiency: mostly caused by injury to the essence of damage to the kidney yin, can appear waist soreness and fatigue, dizziness, tinnitus, spermatorrhea and other symptoms. The treatment is to replenish the yin, and can be treated with medicines such as Liu Wei Di Huang Pill. Kidney yang deficiency: It is a deficiency of yang qi in the kidneys caused by yang deficiency, prolonged illness and old age. Symptoms such as lumbar and knee soreness (a feeling of soreness and weakness in the waist and knees), cold limbs, loss of spirit and impotence may occur. Treatment is based on tonifying kidney yang and can be treated with medicines such as Right Angelica Drink. Kidney qi deficiency: mostly caused by overwork and indolence in sexual intercourse, etc. Symptoms such as soreness and weakness of the waist and spine, frequent and clear urination, lack of warmth in the limbs, and hearing loss may occur. To tonify the kidneys, oral medicines such as Cuscuta pills can be used. The adverse effects or contraindications of the above drugs are not clear, and they should be used under the guidance of professional Chinese medicine practitioners. The symptoms of kidney deficiency should seek medical advice in a timely manner to avoid unauthorized use of medication, so as to avoid adverse consequences.