Children swollen like mosquito bags at the lower eye bags may be due to blepharitis, insect bite reaction, contact dermatitis and other diseases. 1. Blepharitis: Blepharitis may be caused by squamous lesions, blepharospasmal gland dysfunction, bacterial infection and other factors. Affected children will have symptoms such as swollen lid margins, itchy eyes, tingling, etc., which may be manifested as swollen mosquito bags at the lower eye bags. 2. Insect bite reaction: insect bite reaction is mainly caused by insect bites. Children can appear in the local skin rash, edema, erythema, blisters and other symptoms, can be manifested in the lower eye bags swollen like mosquito bags. 3. Contact dermatitis: contact dermatitis is mainly caused by skin contact with exogenous substances that irritate the skin or cause an allergic reaction. Children with pimples, papules, edema, etc., can appear in the lower eye bags swollen like mosquito bags. There are many reasons for children to have swollen bags under the eyes like mosquito bags, parents are advised to bring their children to regular hospitals to find out the cause of the disease and treat the cause.