This is generally caused by the heavy moisture in the body, but the kidney yin deficiency is not serious, and the medication based on syndrome differentiation is not accurate. Liuwei Dihuang Pill is a commonly used medicine for nourishing kidney yin. Although it is composed of three kinds of drugs, nourishing yin is not very greasy, and it also promotes dampness. However, if the pain and discomfort of the waist and knees is caused by empirical evidence, that is, there is moisture in the body, not deficiency of kidney yin, tonic drugs, especially yin-nourishing drugs, cannot be used easily, because yin-nourishing drugs will hinder qi movement, help damp produce phlegm, and aggravate the symptoms of dampness, so this kind of performance will appear. In this case, generally speaking, the tongue coating is white and thick, while simple yin deficiency leads to less and red tongue coating, or slippery tongue coating, and the pulse condition is generally moist or slippery, while yin deficiency tends to be fine pulse. In this case, it is recommended to re-differentiate drugs.