The causes of eye bags formation include: 1, congenital factors: children with eye bags, formed by congenital development, due to the weak development of the orbital septum, the posterior fat can protrude forward through the weak area, protruding fatty mass under the lower eyelid, forming eye bags; 2, age factors: most adults, as they grow older, the skin becomes loose, eye tissue is getting looser, intraorbital fat protrudes forward, eye bags can be formed. Generally to about 40 years old, most of the population can appear under-eye bags. In general, as age gets older, the incidence of under-eye bags is getting higher.