1. Prepare a pot of warm water with a temperature of about 40 degrees and a small brush, and put the crab into the water, so as not to let the water pass through the crab shell.

2. Brush the crab's back and abdomen with a brush, and clean the pliers and legs. If you are afraid of crabs pinching your hands, you can pinch them with chopsticks.

3. Open the belly cover of the crab, squeeze the abdomen to squeeze out the excrement, rinse it with flowing water, and one crab will be cleaned and move on to the next one.

4. Brush the abdomen and back, clean the pliers mouth and legs, open the abdomen cover, squeeze out the excrement, rinse with running water, and the crab will be clean.