Chinese medicine name. It is the penis and testicles of Cervusnippon Temminck (Cervusnippon Temminck) or Red Deer (Cervuselaphus Linnaeus). After slaughter, cut the penis and testicles, remove residual meat and grease, and fix them on a wooden board to air dry. It can also be blanched with boiling water and then baked in an oven at 80℃. The sika deer inhabits mixed forests, mountain grasslands and near forests, and is distributed in Northeast, North China, East China, and South China; red deer inhabits mixed forests, high mountain forests and grasslands, and is distributed in Northeast, Northwest and Inner Mongolia and other places. Sweet, salty, warm in nature, return to the liver, kidney, and bladder meridian. It has the effects of nourishing kidney essence, strengthening kidney yang, strengthening waist and knees. It is often used for kidney deficiency strain, waist and knee pain, deafness, tinnitus, impotence, and infertility.