Conjunctivitis is an inflammatory infection of the conjunctiva caused by bacteria or viruses, resulting in congestion, edema, vasodilation, and follicle formation. The use of ice can affect the blood circulation of the inflamed and swollen conjunctiva, resulting in the inability to reduce the inflammatory tissue in the conjunctiva in a timely manner, which is detrimental to the recovery of the inflammation. Short-term cold compresses may relieve the inflammatory soreness and painful discomfort produced by conjunctivitis. It is not recommended to use ice packs for cold compresses, as too much cold can lead to excessive contraction of the tissues around the eye, resulting in stagnation of the eye blood vessels and delaying the circulation phenomenon of the conjunctival dilated vessels and lymphatic vessels. If the early stage of conjunctivitis can be appropriate use of eye heat, there to accelerate the blood circulation of the eye, conducive to the recovery of inflammation, with local anti-inflammatory drug therapy, there is a better synergistic effect.