There are many kinds of flower shells, and there are eight common ones, namely, flower clams, meretrix meretrix, white clams, green clams, old clams, Xi stone tongues, oil clams and blood clams, all of which have different appearance characteristics. Huajia, also known as clam, is small in size, with a yellow-brown shell surface, and dark lines on the shell surface are similar to characters but have a concave-convex feeling. The color becomes darker and the pattern becomes larger, with spots or patterns composed of black, brown, dark brown, dense color or reddish brown. Living in shallow sea bottom, produced in coastal areas of China. The efficacy and function of the flower nail 1, and the flower nail is rich in nutrients such as protein and calcium, which has the function of lowering cholesterol and is beneficial to fine and moisten the viscera. 2. Flower nail contains protein, fat, carbohydrate, iron, calcium, phosphorus, iodine, vitamins, amino acids, taurine and other ingredients, and has the effects of inhibiting anxiety and resisting spasm. 3, flower nail meat has the effect of nourishing yin and improving eyesight, softening and resolving phlegm, which is very helpful to the body after eating.