The most common clinical allergic skin diseases are dermatitis, eczema, and possibly insect bite dermatitis caused by mosquito bites, etc. Treatment can be oral anti-allergic drugs, commonly used are loratadine or cetirizine, and can also be combined with the oral anti-inflammatory glycopyrrolate tablets, Chinese medicine such as Phellodendron capsule can also be taken orally, which has the effect of clearing heat and dampness. Topical application of Furfuryl Glycolate lotion, which has astringent and antipruritic effects, and hormonal drugs, such as Denide cream and Hydrocortisone Butyrate cream, which have anti-inflammatory and anti-pruritic effects, can also promote the fading of the rash. Patients should pay attention to avoid scratching, scratching, not washing and scalding with hot water, and avoid rubbing the skin with alcohol, vinegar, etc., which can cause the rash to worsen.