Glaucoma is an ophthalmic disease with common characteristics of progressive and diagnostic optic nerve damage. In previous studies, intraocular hypertension is recognized as the main risk factor which causes the optic nerve damage. Besides, the anomaly of optic blood flow regulation caused by carotid artery stenosis, and hypoxia-ischemia caused by hypoperfusion of optic nerve blood flow, are also considered as one of the pathogenesises of glaucoma. Researches show that carotid artery anomaly plays a quite significant role during the development of glaucoma. This paper is going to summarize the correlation research of glaucoma and carotid artery.