With the development of the times, we can see all kinds of plane works on public facilities such as wall surfaces and public garbage cans everywhere on the road at ordinary times, which not only beautifies the city but also makes people feel happy. Compared with the traditional printer, which requires many rails to be assembled and fixed, this smart wall painting printer is more portable, convenient and beautiful, can further improve the efficiency of wall painting and reduce the cost of wall painting, and has higher accuracy, it avoids the mistakes that artificial painters are easy to make, is more suitable for wall painting of plane vector diagram, and is also more suitable for indoor wall painting, thus avoiding the situation that indoor wall painting pigments are scattered everywhere and making the process of indoor wall painting more comfortable. With the development of the times, we usually see walls everywhere on the road, public garbage cans and other public facilities appeared on a variety of flat works, not only beautified the city but also made people feel happy, compared to the traditional printer needs a lot of rails to assemble and fix, this smart wall painting printer, more portable and convenient and beautiful, can further improve the efficiency of wall painting and reduce the cost of wall painting, the accuracy is also higher, avoiding the mistakes that manual painters are prone to, more suitable for wall painting of flat vector drawings, At the same time, it is also more suitable for indoor wall painting, avoiding the situation that indoor wall painting paint is sprinkled everywhere, so that the process of indoor wall painting is more comfortable.