Sinovacula sinovacula generally refers to Meretrix meretrix, a kind of marine shellfish belonging to the genus Meretrix of Meretridae. The shell of the razor clam is rectangular, with round ends, about 4 ~ 8, 5 cm long. The top of the shell is close to the front and the growth line is obvious. The two shells are equal, the shell surface is yellow-green, and it is often ground white. It lives in soft sediments near estuaries and shallow inner bays with a small amount of fresh water injected.