1. Definition: Crab powder is mainly cooked by female crabs. After the mother crab is steamed, the crab meat and crab roe are scattered, which is called "crab roe". Crab yolk is further refined on the basis of making crab powder.

2. Appearance: The crab powder is light in color, grayish white in color and smells fresh, while the crab yellow is dark in color and orange in color, which smells rich in crab fragrance.