Red eye includes acute bacterial conjunctivitis and viral conjunctivitis. The time required for recovery is related to the treatment method and the patient’s own resistance, and it usually heals in about 2 weeks with effective treatment. The length of recovery time varies depending on the cause of the red eye and the treatment method. If bacterial conjunctivitis is the cause of the eye congestion, redness, with yellowish-white eye droppings, usually need to use saline, etc. to rinse the eyes, and then use oxyfloxacin eye drops, erythromycin eye ointment for treatment, most patients can be cured in about 7 days. In the case of viral conjunctivitis, the eyes are congested and red, usually with watery droppings, and can be treated with acyclovir eye drops, and most patients may recover in about 2 weeks. Patients with pink eye need to pay attention to eye hygiene, clean their eyes regularly and refrain from eating spicy and irritating foods during treatment. The disease is contagious and requires isolation and rest, and those living with family members should take precautions not to share towels or other items to prevent infection.