Before windowsXP, Microsoft's operating system used classic pixel icons, which was also caused by the performance of computers at that time. With the improvement of hardware performance, vector icons are more and more widely used in operating systems. Compared with the previous pixel graphics, vector graphics have advantages in texture representation, expansibility and aesthetics, but the pixel style is still developing into various categories with its unique expression, attracting people's attention. This regular combination of pixel particles and the preservation of jagged edge visual effects gradually evolved into a design style, which was loved by many designers and gave birth to many interesting art categories.