The redness, swelling and tearing of the eyes may be related to foreign bodies, keratitis, blepharitis, acute conjunctivitis, etc. Medications should be used according to the cause of the disease; foreign bodies can be treated without medication for the time being, while fluconazole capsules can be used for keratitis, blepharitis can be treated with roxithromycin capsules, etc., and acyclovir eye drops can be used for acute conjunctivitis. 1. Into the foreign body: If the eyes into the foreign body, such as eyelashes or dust and other things, may lead to eye discomfort, redness, swelling, tearing and other phenomena. You need to clean up the foreign body in time, after the foreign body is cleaned up, usually can be relieved, temporarily can not use the drug treatment. 2. Keratitis: It may be related to dirt contamination or fungal infection, which may cause symptoms such as photophobia, tearing, redness and swelling. If it is caused by fungal infection, you need to take fluconazole capsules orally; if it is caused by bacterial infection, you can use tobramycin eye drops to treat it. 3. Blepharitis: this is caused by Staphylococcus aureus infection, eye irritation of the eyes, there will be redness, swelling and tearing of the eyes and other symptoms. It can be treated with oral ibuprofen extended-release capsules and roxithromycin capsules. 4. Acute conjunctivitis: related to viral or fungal infections and other conditions, there will be increased secretions, fear of light and other symptoms. You need to pay attention to cleaning, oral azithromycin dispersible tablets, eye area using acyclovir eye drops and other treatments. It is recommended that patients with red, swollen and tearing eyes should consult a doctor in time to clarify the diagnosis first, and then strictly follow the doctor’s instructions for medication.