Kidney deficiency includes kidney yin deficiency and kidney yang deficiency, when there is kidney yin deficiency there will be symptoms of sweating, called night sweats, that is, sweating at night while sleeping. The sweating is divided into two conditions, including night sweating and sweating due to body heat. The sweating due to body heat is divided into two pathological mechanisms: first, the body has a state of real heat, when sweating is a hot sweating; second, sweating due to deficiency of Wei Qi, that is, sweating due to the lowering of the function of one’s body surface and the inability to fix the fluid, which is a kind of sweating due to deficiency.