With the high?quality development of state?owned enterprises in the new era, it is imperative to promote the transformation and upgrading of high?quality enterprises by realizing power conversion, promoting efficiency transformation, and improving innovation capacity. Taking a large state?owned refining and petrochemical engineering enterprise （hereinafter referred to as S enterprise） as an example, focusing on the personnel management of the general contracting project of refining and chemical engineering construction, a set of quota management system with industry leading and demonstration effect was built. Based on the overall sample range of the saturation sampling method, the correlation causes of labor and employment data were studied, and statistical theory and techniques were used to build a research model, and carried out correlation analysis and variable collinearity diagnosis, with assistance of the characteristics distribution scatter plot and significance test and other scientific index methods to optimize model parameter, comprehensively determining the labour requirement optimal scheme, so as to realize the quantitative load analysis and multi?dimensional monitoring analysis of enterprise labor employment, and labor management risk prevention and control.