Pin up originated from the aesthetic style in the 1920s, which refers to the pin or pin that fixes a poster or canvas on the wall. In 1950s and 1960s, this concept began to be used to describe fashion and sexiness. Pin up's image is usually female, wearing sexy clothes and posing in various elegant or eye-catching postures. This kind of culture was very popular in America and Europe, and occupied a large part in advertisements, movies and music at that time.

Now, Pin up culture is still very active, but it has become more diversified and inclusive. Anyone, male or female, bold or conservative can become an idol. In addition, the theme of Pin up has changed from aestheticism and sexiness to more personalized, interesting and free design. Modern Pin up can be a person's image, a brand or a fashion style.

Although Pin up culture originated in the early 20th century, it still plays an important role in outdoor advertising, cosmetics, fashion clothes, jewelry and other fields. For example, some brands will use the image and elements of Pin up as product promotion to attract more young people. In addition, Pin up has many fans and collectors who collect these images and commodities as expressions of art, fashion and culture.