There are many reasons for pouch formation, as follows: 1. Etiology of aging and degeneration: Lower eyelid pouch mostly occurs in middle-aged and elderly people over 40 years old, which is closely related to human aging, facial tissue aging and degeneration. Its specific formation is generally considered to be related to the following factors. 1, the skin elasticity of the lower eyelid is weakened, and it is slack and drooping. 2. Lower eyelid orbicularis oculi muscle degeneration, weakened elasticity, relaxation and atrophy. 3. The orbital septum degeneration is relaxed and the supporting force is weakened. 4. Orbital fatty degeneration and displacement or orbital fatty hyperplasia. Second, genetic causes: some young people also have lower eye bags, which are mostly related to family genetic factors. In addition, in some people, especially young people, there is a horizontal bulge in front of the lower eyelid just below the eyelid margin, especially when smiling, which makes the lower eyelid look bloated. This sign is caused by local hypertrophy or loose accumulation of orbicularis oculi muscle of lower eyelid without skin relaxation and orbital fat swelling and displacement. Some scholars call it muscular bags under the eyes, while others think that this kind of bags under the eyes can't be regarded as real bags under the eyes, and belong to false bags under the eyes. Baggy eyes are common in middle-aged and elderly people around 40 years old, and can occur in both men and women. It is one of the early manifestations of human aging. Of course, with the improvement of people's material and cultural living standards and the development of science, it is possible to delay the occurrence of pouch. Generally speaking, adults, especially women, will give birth to bags under the eyes between the ages of 25 and 30. This is mostly the result of fat accumulation. The best way to remove it is to remove it completely. Some people feel that their bags under the eyes are not obvious, and they always want to wait until the bags under the eyes are bigger. This concept is wrong, and the result will be a heavy price at the expense of premature relaxation of the lower eyelid skin. (The above information is taken from Hong Kong (Zhengzhou) Beautiful Time Plastic Surgery Hospital)