1. Different families and genera: Kamchatka belongs to the animal kingdom, arthropod, crustacea, mollusca, DECAPODA, Spider Crab and Crab; Crabs belong to the genus Eriocheir sinensis, Eriocheir sinensis, Eriocheir sinensis, mollusca, Decapoda, Arthropoda, Animal Kingdom.

2. The morphology is different: Kamchatka stone crab is very large, and its head and breastplate are nearly pentagonal; Crabs have various shapes, and the common ones are round and oval.

3. Different distribution areas: Kamchatka stone crab, distributed in the northwest Pacific Ocean; Crabs are distributed all over the world, and China is rich in crab resources.

4. Different edible values: Kamchatka stone crab, with high edible value, is the main food in Siberia and North America; Crab, in the history of our country, only river crabs and sea crabs are often mentioned as aquatic products. River crabs are the most famous in Hebei and Tianjin, and sea crabs are the most famous in Jinkoutan, Yantai, Shandong.

Generally speaking, there are many differences between Kamchatka and Crab.