The time that kidney deficiency can recover. Kidney deficiency will take at least 3 months to recover. Kidney deficiency refers to deficiency of kidney essence and deficiency of both yin and yang. Kidney deficiency is mainly divided into kidney yin deficiency and kidney yang deficiency. The most common are kidney yin deficiency and kidney yang deficiency. The symptoms of kidney-yang deficiency are backache, chills in limbs, chills and even edema, which means "cold". Poor sexual function can also lead to kidney yang deficiency; The symptoms of kidney yin deficiency are "heat", mainly including backache, dryness and heat, night sweats, sweating, dizziness and tinnitus. It is best for patients to go to the hospital for examination and targeted treatment with traditional Chinese medicine. Kidney yang deficiency can be supplemented by eating dog meat, mutton, leek and loach, while kidney yin deficiency can be supplemented by eating Hu's tablets, black fungus, black sesame seeds and small walnuts.