Because cicadas can suck sap from branches and leaves, their larvae suck sap from roots in the soil, causing root damage and weakening of trees, leading to other pests and diseases, which seriously leads to the withering and death of garden plants.

Cicada's vocal organ is located in the abdominal muscle, like a big drum covered with a layer of tympanic membrane. The tympanic membrane vibrates and produces sound. Because the vocal muscle can expand and contract about 1 10,000 times per second, and the cover plate is empty from the tympanic membrane, it can sing, so its sound is particularly loud.

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Cicada is rich in chitin, protein, amino acids, organic acids, etc. It is often used to treat exogenous wind-heat, hoarse cough, sore throat, rubella itching, conjunctival congestion, tetanus, infantile convulsion and epilepsy, and crying at night. There is also a record of eating cicadas in the Book of Rites in ancient times. At that time, cicadas were not only food for ordinary people, but also became a good feast for kings and nobles. So far, there are still many places that retain the custom of eating cicadas.

Cicada can be eaten in a variety of ways, both stewed and fried. Like earthworms, grasshoppers, ants, bean worms, silkworm chrysalis and other insects, it is a high-protein food. According to the nutritionist's determination, cicada contains as much as 72% protein, which is a natural nutrient.

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