The occurrence of redness, swelling and itching of the patient’s eyelids may be caused by allergic reactions, insect bites or infections. During certain specific seasons, such as spring, the concentration of pollen in the air is high, and at this time, if the patient is prone to hypersensitivity to pollen, allergic conjunctivitis can occur, which can lead to redness, swelling, itching and other uncomfortable symptoms of the eyelids of the patient. When patients are bitten by bees and other mosquitoes, due to the role of toxins and other damage to the tissue stimulation, also occurs in the eyelids of the local redness, swelling, itching and other discomforts, and may even have dizziness, headache and other systemic discomforts. When localized infection of the eyelid occurs due to the blockage of the secretion ducts of the glands in the eye or trauma, the patient’s eyelids will also experience localized redness, swelling, itching and other discomforts, which may also be accompanied by conjunctival congestion and increased secretion in the eye. It is recommended that patients with severe redness, swelling and itching of the eyelids should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.