Deer whip is deer kidney, with the effect of tonifying kidney yang, powdered does not treat kidney yin and yang deficiency syndrome. Deer kidney is the testicles and penis of the deer, Sika deer, with the effect of tonifying kidney essence, strengthening kidney yang, and strengthening the waist and knees. In clinical practice, it can be used to treat symptoms such as lumbar and knee soreness (a feeling of soreness and weakness in the waist and knees), tinnitus, deafness, tiredness (fatigue), dizziness, impotence, infertility, etc. caused by kidney yang deficiency. Patients with vegetative Yang Sheng need to use this medicine with caution. This drug is a warming drug, and should not be taken by those who have fever or stomach fire. Deer Kidney Powdered has therapeutic effect only on patients with kidney yang deficiency, and is not applicable to patients with kidney yin and yang deficiency. Patients with symptoms of discomfort, should be in the professional physician to identify the guidance of reasonable use of drugs, do not blindly use drugs without authorization, so as not to delay the condition.