Conjunctivitis is one of the common diseases of the eye. Conjunctivitis does not usually affect the patient’s health much and does not affect the ability to see. If conjunctivitis accumulates to the cornea, it may have serious consequences on the patient’s ability to see. Typical clinical symptoms of conjunctivitis are eye itching, stinging sensation, burning sensation, foreign body sensation, conjunctival congestion, increased discharge, and eyelid redness and swelling. If the patient’s symptoms are very severe and the inflammation involves the cornea, it can induce the development of corneal ulcers, which can affect the patient’s vision. Patients with allergic conjunctivitis may experience severe itching of the eyes, sometimes accompanied by sneezing and runny nose. The clinical treatment for different types of conjunctivitis may vary. Bacterial conjunctivitis can be treated with antibiotic eye drops such as levofloxacin, erythromycin, and tobramycin drops to help relieve symptoms. Treatment of viral conjunctivitis can be achieved through hot compresses as well as antiviral eye drops to treat the disease. For patients with allergic conjunctivitis, the oral anti-allergy drug loratadine is recommended to suppress the allergic reaction in the body and help control the condition. In addition, saline can be used to flush the conjunctival sac to reduce symptoms. It is important to take better care of the eyes during conjunctivitis. Usually wash your face with clean, warm water and avoid excessive eye use, which may cause eye strain and worsen symptoms. The recent diet should be kept light and not eat spicy and stimulating foods, which can cause irritation to the eyes. In conclusion, it is important to take better care of the eyes and actively prevent conjunctivitis. Once the symptoms of conjunctivitis appear, actively treat them with medications to suppress the inflammatory response and help maintain eye health.