Cicada coat is the Chinese medicine cicada molt, boiled water can have certain evacuation of wind-heat, diaphoretic, penetrating rashes, brightening the eyes and cataracts (improve eyesight, improve blurred vision), antispasmodic and other efficacy. Cicada molt belongs to traditional Chinese medicine, for the insect black grasshopper, when the waking insects shed skin shells. Cicada metamorphosis has the effect of dispersing wind-heat, relieving pharynx, clearing rashes, clearing eyesight, reducing cataracts and relieving spasm, therefore, it can be used to treat wind-heat colds, sore throat and hoarseness, impenetrable measles, itchy rashes, redness and cataracts in the eyes, convulsions of chiropractic (a pediatric disease manifested mainly by dizziness, apoplexy, and convulsions), tetanus and other diseases. The adverse effects of Cicada Shell are not clear, and pregnant women should be cautious in using it. A single flavor of Chinese medicine boiled in water, without the correct decoction and compounding, its effect is limited, generally not therapeutic, so cicadas can only play a certain degree of the above effects of boiled water, on the above diseases generally only play a supplementary therapeutic role. When using medication, it is necessary to be guided by a traditional Chinese medicine practitioner to use medication, do not use medication arbitrarily, so as to avoid adverse consequences.