Cryptoptera dermatitis is usually an acute inflammatory reaction that occurs when the skin comes into contact with the venom of the cryptoptera. When the symptoms are mild and the lesions are not too obvious, the patient can heal without treatment, but when cryptoptera dermatitis causes a series of severe symptoms, it usually does not heal on its own and requires treatment to heal. If the patient’s condition is relatively mild, such as only minor itching, red rash and small blisters on the skin surface, the patient can be observed first, and the blisters can usually be absorbed, the itching reduced and the rash subsided through their own compensation. For some serious patients, cryptomeria dermatitis can lead to patchy or stripe-like erythema, papules, blisters, and accompanied by itching, pain and other symptoms, which can further develop into pustules, or necrosis symptoms. Patients should be promptly treated under the guidance of a physician, such as levocetirizine hydrochloride, loratadine citrate and other drugs. Patients with severe lesions can also be treated with topical creams, such as mometasone furoate cream and fluticasone propionate cream, to relieve the lesions as soon as possible and avoid causing serious problems such as necrosis. If the patient’s symptoms develop further and gastrointestinal symptoms as well as systemic symptoms such as dizziness and fever appear, he or she should seek medical attention promptly and use methods such as infusion to relieve allergy symptoms under the guidance of a doctor. In addition, attention should be paid to the prevention of cryptophid dermatitis in daily life. If cryptophids are found on the skin, they should not be directly patted or grabbed, which can easily lead to contact with their venom, and should be disposed of after they are set aside from the skin. When you go out to play, try to wear a good hat, mask, arm protection and other protective equipment to prevent mosquito bites.