Background Grassroots CDC laboratory efficiency can reflect and influence a country's capacity for disease control and prevention, improving the efficiency of the grassroots CDC laboratory is very important to national CDC system, this article is based on DEA method, on the basis of clearly defining the concept of efficiency, more methods to build grassroots CDC laboratory efficiency evaluation index, taking China as an example, the grassroots CDC laboratory efficiency study, discusses the current problems in the development of grassroots CDC laboratory operation efficiency. Methods Using data from China National Health Development Research Center, combined with some public data from National Bureau of Statistics and China Health Statistics Yearbook data, use data envelopment analysis (DEA) to analyze the operation of China's grassroots CDC disease control laboratories from 2017 to 2019 Efficiency, input-output improvement value and total factor productivity changes. Results From 2017 to 2019, the operational efficiency of grass-roots CDC laboratories in China showed a downward trend, and there was a serious problem of insufficient output, especially the grass-roots CDC laboratories in western China, which had the lowest operational efficiency. By analyzing the change of total factor productivity, it is found that the total factor productivity of grass-roots CDC laboratories in China generally shows a downward trend, and the technical level and management efficiency have declined to a certain extent, and the working ability of CDC laboratories has not been effectively improved. Conclusions The operational efficiency of grass-roots CDC laboratories is declining, and the technical level and management efficiency are declining. The unreasonable utilization of laboratory resources and unbalanced development are still outstanding, and the operational efficiency of laboratories needs to be further developed. Policymakers should pay attention to the imbalance of resource utilization and development of grass-roots CDC laboratories, give certain policy support to inferior CDC laboratories, and urge grass-roots CDC laboratories to strengthen management, improve technical level and management efficiency, increase the actual output of laboratories, and further enhance the working ability of grass-roots CDC laboratories.

The 19th National Congress regarded how to deal with the three rural issues as important tasks for the work of the whole party. The rural informatization construction provides a new way to coordinate urban and rural development, and conduct in-depth study of the three rural issues. The researchers conducted a random sample survey of Chengdu, which is representative of the development of the southwest region. The researchers randomly selected various regions of Chengdu to conduct surveys. Firstly, the factorization index was reduced by factor analysis, and then the OLS regression model was constructed by using Engel's Coefficient as the dependent variable with the comprehensive informationization index as the independent variable. Studies have shown that a more complete information construction has a significant positive impact on the Engel's Coefficient of rural households. In addition, the higher the level of informatization, the higher the household income. Finally, based on the results of data analysis and field research, the following recommendations were made. The government should implement price subsidies for televisions, computers, mobile phones, etc., and increase the number of households that hold these information products. Besides, the application of advanced agricultural technology should be promoted and rural information construction should continue to be promoted.