1, look at the ring pattern: there are three ring patterns between each pair of feet of Cordyceps sinensis, and the ring patterns are complete and clear; The ring pattern of counterfeit Cordyceps sinensis is generally vague and incomplete.

2. Smell: The smell of Cordyceps sinensis is slightly fishy and smells like straw mushroom; Fake Cordyceps sinensis doesn't smell like real Cordyceps sinensis, and it smells a little fishy.

3. Look at the cross section: the cross section of Cordyceps sinensis is milky white, most of which are accompanied by black semi-circular or V-shaped, and the epidermis, bacteria and digestive line can be clearly seen; The cross section of counterfeit Cordyceps sinensis is generally dark yellow or black, and the epidermis, bacteria and digestive line are blurred.

4. Look at the color: the appearance of the worm body of Cordyceps sinensis is brown, the appearance of branched Cordyceps sinensis is yellow-green, and it is yellow-brown or black-brown after entering the water. The appearance of Cordyceps Liangshan is brown, and the appearance of ground silkworm is light yellow or gray-black; Fake or poor quality Cordyceps sinensis is often dark yellow or black in color.