Kidney deficiency can be recovered in 1-3 months in young adults, while it is difficult to recover in older patients. Kidney deficiency includes various types such as kidney qi deficiency, kidney yin deficiency and kidney yang deficiency. Kidney yin deficiency is manifested by symptoms such as irritable heat in the five hearts, thinning of the body, yellowish urine, red tongue without coating, thin pulse, etc. Patients may experience dizziness and tinnitus, weakness of the waist and knees, forgetfulness, seminal emission, premature ejaculation, amenorrhea and oligomenorrhea. Kidney Yang deficiency is manifested by cold fear and cold limbs, white complexion, impotence, uterine cold and infertility, nocturnal urination, diarrhea and other symptoms. Kidney deficiency in young people can be relieved within 1-3 months through lifestyle adjustments and medication. Older patients with kidney deficiency cannot recover on their own and need to be treated with evidence-based kidney tonics. Patients with kidney deficiency should visit a Chinese medicine department and use Chinese medicine or proprietary Chinese medicine for evidence-based treatment to avoid blind use of medication and delay of the condition.