The eyebrow arch is an arched protrusion located above the upper edge of the orbit. Eyebrow arch, also known as brow bone, is an anatomical term. The human eye is in a hemispherical hole, and the eyebrow arch is the semi-arc edge at the corner of the hole and forehead. It is above the eyeball, which is the side that has to be formed when turning. Shaped like a bow, it is called eyebrow arch bone.

Eyebrow arch is a Chinese character in China, which refers to the arched part with long eyebrows protruding below the forehead, also called eyebrow bone. The eyebrow arch of white people is higher than that of other races, and that of men is higher than that of women. In terms of appearance, people with obvious brow bones have three-dimensional facial contours and beautiful eyes. There is an operation called eyebrow augmentation, which uses medical materials such as silica gel to pad the inconspicuous eyebrow bone, highlighting the outline of the eyebrow bone, increasing the three-dimensional sense of the part and improving the flat feeling of the part.