You can't judge by these alone. Bear bile is a precious Chinese herbal medicine, and its main chemical components are ursodeoxycholic acid, chenodeoxycholic acid and cholic acid. Due to the scarcity of resources (especially wild bear bile), some bear bile is filled with pig, cow and sheep bile, and some are even forged with three needles or yellow extract and brown sugar. Identification of authenticity is as follows: 1. Appearance: Bear gall is about (8- 10)X(5-7)cm, which is generally divided into golden gall and ink gall. Semi-dry gold bile is brown and bright, and ink bile is black. Take some dried bear bile powder and put it on the palm of your hand. After rubbing with water, it is sticky, has a sense of rotation, and has a special fragrance. It's true. 2. Taste method: The real taste is bitter and sweet, with a cool and lasting tongue-drilling feeling, or put a small piece in your mouth and it will be completely dissolved, cool and chewy. Fakes are bitter and smelly. 3. Water inspection method: Take a glass of clear water and put it into bear bile the size of rice grains. It can be seen that small particles dissolve quickly on the water surface, and the pigment sinks into the bottom of the cup without spreading; Cattle and sheep bile dissolves slowly, with little pigment and even white flocculent insoluble matter. The dissolution rate of pig bile is slightly faster than that of cattle and sheep bile, but slower than that of bear bile, with less pigment and insoluble flocs, but less than that of cattle and sheep bile. 4. Burning method: take a little bear bile and put it in a metal spoon, burn it without burning it, and really only see white bubbles without obvious fishy smell; Fake goods do not melt after burning; Bile of pigs, cattle and sheep will also foam after burning, but it has obvious fishy smell and glue smell of burning bone glue. 5. Fluorescence method: Take a little bear bile powder or fruit juice and observe it under ultraviolet lamp. Yellow and white fluorescence is genuine; Those with brown fluorescence are fakes; Or take bear bile and dissolve it in 20 ml of 7% glacial acetic acid, and observe the solution under ultraviolet lamp. If it shows light blue opacified fluorescence, it is cow and sheep bile. 6. Biochemical method: Dissolve pig bile powder or bear bile in water solution, and determine the content of ursodeoxycholic acid. Hope to adopt