1, if you buy live river shrimp from the market, you can put a small amount of salt in the water, soak the river shrimp for 10-20 minutes, let it drain, and then rinse it with clean water. 2. If you have higher requirements for the cleanliness of river shrimp, you can brush the belly of river shrimp with a small toothbrush. If it is relatively clean river shrimp, this step can be omitted. 3. The rectum of shrimp is located in the back, which is full of digestive residues. If it is not cleaned, it is easy to be eaten in the stomach. Removing shrimp line is a very important part of washing shrimp. Shrimp line: 1, cut the head of shrimp, and cut down from the brain of shrimp at a 45-degree angle. 2. Pick out the shrimp brain with scissors. Black brain and red blood are all out. 3. Next to the front of the shrimp brain is shrimp yellow, which is a good thing. If there is yellow, be careful to keep it as much as possible when picking. 4. Gently pull out the shrimp brain, which will pull out some shrimp intestines. 5. cut off the shrimp tail. If you don't want to look good, cut off a little tail meat from the shrimp tail, because there may be sphincter here. 6. Squeeze the shrimp intestines, hold the shrimp back with your index finger and thumb, and exert force at the tail to make the shrimp intestines come out.