The method of selecting swimming crabs is as follows:

1. Pinch the crab shell. Pinch the crab shell to see if water comes out of the crab. The more water comes out, it is empty weight, not really fat, and there is less water out. If so, it means that this crab is really fat.

2. Pinch the crab legs. You can pinch the middle legs of the crab with a little force. If you can feel that the muscles inside will contract and are elastic, it means that the swimming crab is not very thin and should be relatively thin. Fat and tender.

3. Look at the back of the crab. The back of the plump and high-quality swimming crab is blue and hard.

4. Look at the crab navel. The abdominal navel of plump and high-quality swimming crabs is generally light red. The more red and the navel is firm, the plump the crab will be.

5. Look at the crab cap. You can know the fullness of the cream by looking at the crab cap. If there is anything yellowish-red on the tips on both sides of the crab cap, the more it shows, the more yellow it is. Smell it, a normal fishy smell is acceptable, but no foul smell. Smelly swimming crabs are generally bad.