The skin often becomes numb, painful and itchy after an insect bite. The symptoms are not serious and need to look at the type of insect and the size of the toxicity. You can apply some topical glycolic lotion or hydrocortisone butyrate plus Longzhu ointment topically, usually most of them will subside in 3-5 days or a week or so. If it is a more toxic insect, such as centipede bites or hornet stings, the symptoms of tingling will be more serious. You need to use soap and water to clean the local wound, in addition to sucking out the venom with a suction device or using your hands to suck out the venom and sting, pull out, after sucking out the wound needs to be disinfected with iodophor or alcohol, etc., and then apply baking soda solution externally, observe whether there is panic, nausea, vomiting, if there is a need to go to the hospital to do laboratory tests as well as electrocardiogram, in serious cases need to go to the infusion treatment.