The frozen razor clam is thawed first and then washed with water for several times. The washed razor clam is soaked in a container filled with seawater or salt water. The water is salty, and the razor clam is easy to spit out sediment. Generally, it is soaked for 2 to 3 hours, then it is fished out and drained, and then the shell is brushed clean with a small toothbrush. The razor clam is a kind of marine shellfish, mollusk and shell. It is narrow and long in shape, with egg-yellow outside and white inside. It lives in coastal seawater and can also be cultured artificially. Its meat is delicious. The razor clam is rich in nutritional value, and its meat is rich in protein, calcium, iron, selenium, vitamin A and other nutritional elements. It has delicious taste and high nutritional value, and has the function of tonifying deficiency.