Shrimp thread is the black or green line on the back of the shrimp, the digestive tract of the shrimp, the shrimp will be cooked, the bacteria in the shrimp thread will also be killed by high temperature, so the shrimp thread is edible without removing. However, it is not recommended to consume shrimp threads, because they are not yet fully digested food residues, sediment, etc., not clean, and may have a muddy smell when consumed, and with a bitter taste or sand, and affect the taste of shrimp, so it is usually recommended to dispose of the shrimp threads before consumption. The common method of removing shrimp thread is to pick with a toothpick and open the back to take shrimp thread. Specific methods are as follows: 1, toothpick pick: rinse the shrimp with water, drain the water into the basin, squeeze the shrimp with your hand, find the third joint of the shrimp (shrimp head and shrimp body connection is counted as the first joint), from the gap in the third joint with a toothpick from the back into the shrimp body, slowly and forcefully pick out the shrimp line, and then gently tug out by hand; 2, open the back to take the shrimp line: open the back to take the shrimp line with one hand to gently press the shrimp head on the cutting board, use a knife to cut in the location of the shrimp line, the open side can easily remove the shrimp line.