From the survival environment, pike crab is sea crab, belonging to the seafood category, once leaving the sea water, not easy to survive, even if the express delivery is faster, it is difficult to keep alive, difficult to transport over long distances, resulting in can not go on the more inland table. And hairy crabs are lake crabs, belonging to freshwater crabs, in terms of transportation conditions are more mature, freshness and survival rate is much higher than the sea crab, can be transported to more distant places. From the cooking process and flavor, pike crab because it is seafood, so fishy than hairy crabs to heavy, steaming, then not as fresh as hairy crabs, to add weight fried or stewed, such as ginger and onion fried crab, rice cake fried crab, crab fried typhoon shelter, crab meat pot, etc., the operation is more complex, and easy to cover the flavor of the crab itself. The hairy crab fishy flavor is relatively light, simple steamed can be very delicious, the operation is much simpler than the pike crab. Nowadays, people prefer simple treatment of ingredients to keep the flavor of the ingredients as much as possible. In terms of consumer psychology, because of the convenience of transportation, by a variety of advertising and marketing packaging to promote, so that more people think that gifts to send hairy crabs or eat hairy crabs than pike crabs are more decent and advanced, hairy crabs crab paste density is more compact, the color saturation than pike crabs is much higher, the photo is better to look at. In season, the circle of friends is more steamed shelled hairy crabs, rather than ginger and scallion fried crab or crab meat casserole.