Cicada shells can be powdered and drunk. Cicada shells can be powdered and taken, or decocted. Cicada metamorphosis is sweet in taste and cold in nature, and belongs to the lung and liver meridians. It has the efficacy of evacuating wind-heat, relieving pharynx, transmitting rashes, brightening the eyes and retracting cataracts (improving eyesight and blurred vision), and antispasmodic. This product can be used internally in decoction, or in pills and powder. It can also be used externally as a decoction of water to wash or powdered dressing. Cicada metamorphosis is light and floating, it can treat wind-heat colds, sore throat and hoarseness caused by the beginning of warm diseases; Xuan Duan Transparency, evacuation of wind-heat, penetration of rashes to stop itching, it can treat wind-heat outside the bundles, measles impermeable, rashes itching.