Kidney deficiency is produced by a deficiency of the kidney essence and yin and yang, which can lead to a lowered immunity and a series of uncomfortable symptoms in the body. There are many types of kidney deficiency, the most common of which are kidney yin deficiency and kidney yang deficiency. Both kidney yin deficiency and kidney yang deficiency may lead to back pain, but they need to be identified in conjunction with other symptoms. Kidney yin deficiency is mostly due to indiscriminate intercourse, depletion of kidney essence, loss of blood and fluid, prolonged illness and kidney injury, internal injury of emotion and will, and dark depletion of kidney yin. Clinical manifestations are dizziness and forgetfulness, insomnia and dreaminess, loss of vision, back pain, dry mouth and sore throat, spermatorrhea in men and menorrhagia, amenorrhea and infertility in women. If necessary, take Zuo Gui Wan, Zhi Bai Di Huang Wan, Da Yin Wan, etc. under the guidance of a doctor; 2, kidney Yang deficiency: kidney Yang is the root of Yang energy, kidney Yang deficiency is mostly seen in those who are not abstinent in intercourse, old and sick, and weak. Clinical manifestations are back pain, coldness in the waist and legs, pale face, fatigue, forgetfulness, reduced sexual function, impotence, and symptoms such as thin stools, increased nocturnal urination, and weak pulse. Treatment should follow the principle of warming the kidney yang and should not be done hastily by using big tonic medicines. You can take warm foods in daily life, such as jujube, cinnamon, mutton, etc., or take warming medicines for kidney yang deficiency, such as Right Return Pill and Guihang Dihuang Pill, under the guidance of a doctor. In addition to the above, when the appearance of lumbar muscle strain, lumbar spine lesions and other diseases can also cause symptoms of back pain, patients should not rely on a symptom alone to determine that they are kidney deficiency, you need to go to the hospital for relevant tests to clarify the specific causes and give targeted treatment, so as not to delay the disease.