The fullness of forehead has a very important position in facial aesthetics, and a low flat forehead, narrow forehead or smooth curve of flatness will affect the facial aesthetics. The most important method for forehead fullness enhancement and perfect curve embodiment, as well as now generally accepted by the majority of beauty seekers, is to fill with autologous fat, whose surgical risk is mainly related to the human body structure and surgical operation. First of all, the physiological structure of the forehead is the frontal bone covered with frontal muscle outside, then the skin, there is a small amount of fibrous connective tissue, which is the tendon membrane, the space for transplanting fat is relatively small, and the forehead may not achieve the perfect cosmetic effect if the missing volume is more. In addition, there are a lot of blood vessels and nerves in the forehead, if it is an inexperienced doctor or not a cosmetic surgeon in a regular medical institution, the operation process may cause permanent damage to the blood vessels and nerves in the upper forehead, mainly including infection, hematoma, embolism in the injection to the blood vessels, skin necrosis, vision loss, brain infarction, and even life-threatening. Therefore, it is recommended that the majority of beauty seekers, although this operation is relatively simple and less traumatic, choose a regular medical beauty institution and a medical beauty doctor with extensive experience to operate.