1. The penis should be skinned immediately after slaughter, and a small amount of foreskin should be left on the penis. Deer whip will be covered with a pinch of hair after processing, which is one of the signs of authenticity and is easy to distinguish from fakes. When taking the whip, one hand lifts the foreskin of the penis, and the other hand holds a sharp knife to peel off the penis and abdominal wall to the ischium and cut off the vas deferens of both testicles. At this time, the penis of sika deer is 30-35 cm long and that of red deer is 45-50 cm long. When the abdominal cavity is cut open, there is still a penis 5 ~ 6 cm in the pelvic cavity, and there are prostate and urethral glands. Seminal glands, etc. , should also be cut together, but this part of the penis is generally not used. Frozen fresh red deer penis imported from Australia and New Zealand has deer penis in the pelvis, but it is also discarded when it is processed in China.

2, plastic surgery to remove the residual meat, fat and fascia on the penis. At present, there are three methods of penile plastic surgery. First of all, the penis is in a natural state, and the testicles are tied at 1/5 below the penis, with the penis root facing up and hung with a thread; 2. Straighten the penis (natural length), tie the testicles at15 below the penis, nail the glans penis and the root of the penis on the wooden board respectively, and turn the foreskin backwards to expose the glans penis for several centimeters; The third is to straighten the penis (natural length), tie the testicles under the penis at a ratio of 1/5, and nail the penis root and foreskin on the wooden board respectively. Among them, the second method is more useful.

3. Drying Put the whole penis and testicles into an oven at 50 ~ 60℃ for drying, or air dry naturally. Natural air drying should pay attention to prevent corruption and moth-eaten.