6-year-old child left eye swelling may be mosquito bites, trauma, blepharitis and other causes, the child can be appropriate for cold compresses, medication, surgical treatment and other ways of treatment, to promote the recovery of the condition. 1. Mosquito bites: mosquito bites patients eyelids, patients in addition to eye swelling, there will be eye itching, congestion and other uncomfortable symptoms, the child can be appropriate for the eyes of the local cold compresses, relieve itching and swelling. Children need to avoid scratching with their hands, so as not to aggravate the symptoms. 2. Trauma: If you accidentally hit your eyes, it may also cause eye swelling. At this time, we should observe the swelling of the child, whether there is bleeding or hematoma formation, if so, we should seek medical treatment promptly. If the swelling is minor, cold compresses can be applied to relieve it, and localized hot compresses can be applied after 48 hours. 3. Blepharitis: Blepharitis refers to suppurative inflammation of the eyelid glands, and the patient may have redness and swelling of the eyelids, and the child may be treated with tobramycin eye drops and other medications as prescribed by the doctor to promote the recovery of the condition. If an abscess develops in the eyelid, the child can have the abscess incised and drained to promote the abscess to subside. Children with significant eyelid swelling are advised to seek prompt medical attention to assess their condition and follow medical advice.