There are many roles and functions of calcium, magnesium and zinc, examples are as follows: 1, calcium: is necessary to maintain the normal function of the human nerve, muscle, skeletal system, cell membrane and capillary permeability, calcium deficiency will affect growth and development, resulting in stunted growth; 2, magnesium: can inhibit the activity of the central nervous system, inhibit the release of acetylcholine at the neuromuscular junction, block the conduction of the neuromuscular junction, reduce or lift Muscle contraction, while the vascular smooth muscle has a diastolic effect, so that the spasm of the peripheral vasodilatation, lower blood pressure, thus the prevention and treatment of eclampsia, the uterine smooth muscle contraction also has an inhibitory effect; 3, zinc: is an important component of many active enzymes in the body, can promote growth and development, and improve the sense of taste, zinc deficiency will lead to stagnant growth of the body, wounds do not easily heal, can also occur stomatitis, tongue inflammation Zinc deficiency can lead to stagnant growth, wound healing, stomatitis, tongue infection, chronic diarrhea, lack of appetite and other symptoms.