Whether or not conjunctival edema can heal spontaneously is related to the cause of conjunctival edema, such as rubbing the eyes and other mechanical stimulation caused by conjunctival edema can be self-healing, while the cavernous sinus arteriovenous fistula and other causes of conjunctival edema, generally more difficult to self-healing. Conjunctival edema is a symptom that can be caused by many reasons, and the prognosis is different for different causes of conjunctival edema. Conjunctival edema is a common cause of mechanical irritation caused by rubbing the eyes and is usually self-healing. If the patient avoids further eye irritation and stops rubbing the eye, it can usually recover gradually. Conjunctival edema caused by infection and allergy-induced conjunctivitis is also usually self-healing, but the self-healing period is longer, and the use of medication, such as tobramycin drops, to control the inflammation can accelerate its recovery. However, conjunctival edema caused by cavernous sinus arteriovenous fistula is generally more difficult to recover on its own, and usually requires surgical treatment to cure the cavernous sinus arteriovenous fistula in order to make it recover. It is recommended that patients with significant conjunctival edema consult a doctor to evaluate their condition and follow the doctor’s instructions for treatment.