A 48-year-old male patient, Qiu Mou, who suffered from “forest encephalitis”, which is extremely rare in Shanghai, was recently discharged from the hospital after more than 20 days of hard work by the medical staff of Puanan Hospital. Qiu, a native of Mudanjiang, Heilongjiang Province, came to Shanghai for business, and one day in early June, he came to the emergency department of the hospital with high fever and unresponsiveness. When the emergency physician asked about his medical history, his companion casually mentioned that the patient had been bitten by a bug called “grass crawler” on the top of his head during a trip to the forest half a month ago, and the bug was removed from his scalp only at the local forestry hospital. Dr. Wang Yuhui, director of neurology, was alerted to the fact that the “grass crawler” is an insect that lives in the forest and is scientifically known as a “hard tick” that carries a terrible “forest The ticks are called “hard ticks” and carry the dreaded “forest encephalitis” virus. After a cerebrospinal fluid puncture, he was diagnosed with “forest encephalitis”. Forest encephalitis is an infectious disease of the central nervous system caused by infection with the forest encephalitis virus. After being bitten by a hard tick with the virus, people are susceptible to the disease, and encephalitis occurs after an incubation period of about 8 to 14 days, followed by muscle paralysis, atrophy, and death by coma. The incidence of the disease is less than 5 per 100,000 even in the Daxinganling forest area. There is no special treatment for forest encephalitis, and the cure rate is low, with serious sequelae. In order to save the patient’s life, Dr. Wang quickly organized resuscitation. Finally, on the fourth day, the patient’s consciousness was reduced, he gradually opened his eyes, he could eat, he could move his paralyzed limbs, and he began to recognize his family members. On the tenth day, the patient was able to get out of bed and walk a few steps with assistance …… With the unremitting efforts of the medical staff, the patient’s paralyzed limbs basically recovered their functions.