Depending on the cause, antibiotics, glucocorticoids, diuretics and other drugs can be chosen to reduce puffiness. 1. When the eye is inflamed, red and swollen due to bacterial infection, which manifests itself as puffy bags under the left eye, antibiotics should be used routinely for 3 to 5 days first, such as levofloxacin and tobramycin. Also pay attention to eye hygiene, regular cleaning of the infected eye. 2. When allergens such as willow wool and animal hair cause localized swelling of the left eye, glucocorticoid ointment such as prednisolone acetate is recommended. When symptoms are severe or due to immune diseases such as systemic lupus erythematosus that cause swelling of the left eye bag, oral medication such as dexamethasone is recommended for systematic treatment of the primary disease. 3. In case of swollen bags under the eyes due to renal insufficiency, diuretics such as hydrochlorothiazide can relieve swelling with fewer side effects. The use of medication is recommended to consult a professional doctor, but also through massage, hot compresses and other methods to relieve puffiness under the eyes.