Whenever you cry, your eyes will be swollen, which may be a normal physiological reaction, or it may be caused by blepharitis or conjunctivitis. 1. Normal physiological reaction: the subcutaneous tissue of the eye is rich in capillaries, which can lead to congestion of the eyelids and conjunctiva when crying, especially when rubbing the eyes with the hand while crying, which can lead to severe swelling of the eyelids. 2. Blepharitis: If the patient suffers from blepharitis, due to the tears contain a large number of inorganic salts, with the evaporation of water in the tears, the concentration of inorganic salts gradually increased, can stimulate the skin around the eyes, resulting in patients with eye swelling aggravated, can be used under the guidance of a professional doctor antibiotic eye drops, such as levofloxacin eye drops, tobramycin eye drops. 3. Conjunctivitis: when suffering from conjunctivitis, under the stimulation of inflammation, it can lead to conjunctival congestion. Crying can also cause conjunctival congestion and swelling, so the patient’s conjunctival congestion and swelling can be more serious. Patients with significant eyelid swelling are advised to seek prompt medical attention to assess their condition and follow medical advice.