The taste is salty, astringent and cool, it has the efficacy of calming the liver and submerging yang, nourishing yin and tranquillizing the spirit, resolving phlegm and fixing essence to stop the belt. Clinically, it is often used with dragon bone, tortoise board, white peony, etc., can be used for the treatment of yin deficiency and hyperactivity due to restlessness, palpitations and insomnia, dizziness and tinnitus, etc.; with zhebei, xuan shen, etc., can be used to soften the solid to disperse lumps, applicable to fistula, phlegm nucleus and so on; if with danshen, zeilan, turtle shells, etc., can also be used to treat the swollen liver and spleen, and if the fire calcined for treatment of false sweating, spermatophoresis and dislocation of the leakage of the disease, but also because of the role of its acid production, can also be used for gastric acid, and also used to treat the symptoms of the disease. If calcined, it can be used in the treatment of deficiency sweating, spermatorrhea and leucorrhea, and because of its acid-producing effect, it can also be used in the treatment of gastric ulcers and hyperacidity. Nowadays, the clinical medicinal scope of oyster preparations is gradually being recognized and expanded, and it can be used as anti-tuberculosis medicine, which can eliminate nausea and gastric discomfort caused by drinking a lot of alcohol. At the same time, it has the effect of spermatogenesis and strength for men, and it can also lower the blood sugar of diabetic patients and reduce the comorbidities of diabetes mellitus. In addition, it has a good effect on women's menopausal syndrome, functional uterine bleeding during puberty, prenatal and postpartum weakness, as well as arteriosclerosis, coronary heart disease, angina pectoris, hyperlipidemia, arrhythmia, chronic hepatitis and so on."