This article uses the panel data of 10 industries from 2009 to 2018, and uses the synthetic model of data envelopment analysis (DEA) and Malmquist index method to analyze the comprehensive efficiency and total factor productivity of the manufacturing industry and its ten sub-sectors Changes are analyzed. In this paper, the software DEAP 2.1 is used for dynamic analysis of the data, and the Ningxia manufacturing productivity index is decomposed according to different periods and different industries. The results show that the average annual productivity growth rate of Ningxia's manufacturing industry is 1.1%, while the annual declines in technical efficiency and scale efficiency are 0.6% and 1.4%, which have a negative impact on productivity. Therefore, in order to ensure the productivity growth of Ningxia's manufacturing industry, this article combined with the analysis results of the Malmquist index method to make reasonable suggestions from the government level, enterprise level and industry level.