Cold eye swelling and pain may be related to upper respiratory tract infection, fever, complications, sleep and diet, allergies and diseases. 1. Upper respiratory tract infection: Since the eyeball is connected to the respiratory tract, pathogens can easily involve the eye and cause inflammation and pain. 2. Fever: When the body temperature rises, the blood vessels in the eyes are easily dilated and congested, and the intraocular pressure increases, causing swelling and pain. 3. Complications: Complications caused by colds, such as conjunctivitis and sinusitis, can also lead to eye swelling. 4. Sleep and Diet: Colds cause insomnia, dry eyes, and eating more spicy and stimulating foods can also cause eye discomfort. 5. Allergies and underlying diseases: Allergies can also cause eye swelling and pain, and some underlying diseases, such as glaucoma, can increase intraocular pressure and cause swelling and pain. When a cold causes eye swelling and pain, go to the hospital in time for examination, and the doctor will find out the cause of the disease and make a clear diagnosis, so as to avoid delaying the treatment.