Our company produces a plastic film with special microstructure and streak effect by combining the optical design and adopting LIGA-Like process related technologies in the microstructure embossing process collocated with composite plastic film. This article will makes use of various parameter combinations of microstructure embossing process to find out significant process factors that affect the quality of composite plastic film through researches and analysis on fractional factorial design method experiments, so as to stipulate the process parameter conditions of the film adapting to the mass production microstructure embossing process of our company. By controlling the production process conditions, the output yield of the composite plastic film in the microstructure embossing process will be increased to improve the product competitiveness. Meanwhile, it is also expected to improve the technology and development of our company in the microstructure embossing process field through this research.