Children with swollen bags under the eyes, also known as lower eyelid swelling, has many causes, including eye allergies, blepharitis, etc., and the treatment includes general treatment with drugs and medication. 1. Eye allergy: such as contact with pollen, feathers and other allergens caused by allergic mutation reaction, caused by loose connective tissue edema around the eyes, generally cut off the allergens can be relieved. Severe cases can be treated with drugs such as Dengbisu eye ointment. 2. Blepharitis (1) scaly blepharitis: generally should remove the cause to avoid stimulation, available 3% boric acid solution to clean the local eyes. (2) Ulcerative blepharitis: use saline to clean the eyelid margin, pull out the affected eyelashes and drain the follicular pus. At the same time, drip antibiotics such as gentamicin, sodium sulfadiazine acetate, etc., apply erythromycin ophthalmic ointment. (3) Canthus blepharitis: the special drug for the treatment of this disease is zinc sulfate liquid. Antibiotic eye ointment can be applied to the canthus and vitamin B complex can be taken orally. In addition to the above diseases, the lower eyelid swelling of children can also be caused by conjunctivitis and other eye diseases. It is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, and then give targeted treatment. All of the above medications should be used under the guidance of a doctor, avoid self-medication.