First of all, buy back the crab into the basin, with the current will be visible on the surface of the crab dirt rinse clean, in the basin poured into the right amount of salt water, soak for a period of time, the crab will be in the stomach of the dirt spit out, during the period can be replaced several times with water until the basin is not in the crab spit out of the dirty things can be. Secondly, when scrubbing crabs, use a small stream of water with a toothbrush to scrub the crabs, grab the crabs by the sides with the shells facing upwards, scrub the crabs in order from the body, abdomen, back, mouth, and then to the crab legs and pincers, scrub the crab and pay attention to the strength of the mastery of the pincers will be too hard to fall off. Finally, lift the crab's abdomen, squeeze out the feces, gills clean, rinse with water. Cleaning crab method a first will be soaked in salt water to wash the crab into the basin, and then poured into the appropriate amount of white wine, soaked for 10 minutes, with white wine can be the crab drunk, but also effective in removing the fishy flavor. After the crab is slightly drunk and smoked, the crab's back is struck with a hard implement until the crab is knocked out. At this time, you can quickly grab the back of the crab after knocked out, use the thumb and forefinger to clamp the crab on both sides of the pincer angle, you can put on gloves when grabbing the crab, so as not to be caught by the crab's pincer fingers. Grab a brush and brush the crab's eight legs carefully, then turn the crab's abdomen over and clean it carefully with a toothbrush, don't leave every crevice behind when brushing. Finally, rinse the crab to clean up the silt and excrement in the crab, and put the rinsed crab into a pot for use. If only steamed so after processing can be on the pot. Cleaning crab method two 1, the belly of the crab up, into the warm water with about 40 degrees, the temperature here should not be too high, so as to avoid the crab feet off, but also affect the texture of the crab meat. Quietly wait for the crab to turn over, you will see a hot water choking stunned crab is waiting for you to command. 2, at this point it is very convenient to grab the sides of the crab, with a brush carefully the back of the crab, abdomen, mouth are clean, scrubbing crab legs and pincers on both sides of the crab, to scrub the crab hair part of the brushing, this place is the most prone to hide dirt. 3, followed by thumb and forefinger to grab the crab's back, abdomen, mouth are clean. The crab's pincers and forefinger, and open the crab's abdominal cover, squeeze out the abdomen in the excrement, and then use scissors to cut off the crab intestine. 4, with scissors to pry open the crab shell, cut off the black crab stomach next to the crab yolk as well as the body of the two sides of the soft crab gills, the crab in the middle of the crab yolk near the crab and there is also a white heart of the crab is also removed. 5, and finally clean off the crab inside the excrement and pincer angle can be. This method can also clean the inside of the crab, more suitable for cooking and frying. After cleaning the crab can use a rope to tie the two sides of the pincers and the body together, to prevent the crab woke up and pinched fingers. So it seems cleaning crabs is not a difficult task to accomplish. So do not steam on the pot without cleaning, so that dirt is likely to fall into the crab.