In the early 1980s, the metering and sizing press was developed, which is a roll coating equipment. After improving the coating formula and the quality of the base paper, the papermaking process and coating process were improved and stabilized, and the operating efficiency of the paper machine was greatly improved. Using metering The size press MSP successfully produces lightweight coated paper. This article will focus on the special features of MSP equipment, the quality parameters of coated paper and some actual production experience.