1. Soak snake gall in high-alcohol liquor (above 60℃ is recommended) for more than 1 month, because there are many parasites in snake gall. If you don't soak in high-alcohol liquor for a period of time, you will easily get parasitic diseases, and it will not be worth the candle.

2. Utilization of high temperature: This method is generally used for snake gall processing, and snake gall is turned into dried snake gall through more than a dozen complicated processes by using high temperature. After high temperature treatment, there is no danger of parasites, but you must follow the doctor's advice.

3. steaming clothes: this method is similar to the principle of sun drying. It is also taken after high temperature kills parasites and bacteria in snake gall. After the snake gall is put into the vessel, it can be steamed in the pot.