The shrimp thread is the digestive tract of the Peeper shrimp, also known as the shrimp gut. Shrimp thread is usually black in color and may sometimes be less visible.

Shrimp threads contain some bitter substances, which may affect the taste and texture of peeled shrimp after cooking at high temperatures. It is best to remove the threads from the shrimp when eating peeled shrimp. You can pick out the shrimp threads by washing, cutting off the excess and using tools such as toothpicks, and then wash them with water.