Abstract: In this paper, ergonomics and virtual reality were used to evaluate the agricultural equipment cab. Firstly, typical agricultural equipments such as tractors and combine harvesters were chosen as the research object. The ergonomics evaluation index system was established, and parametric model was designed by using OpenGL and virtual reality system was developed for interactive features. The objective evaluation method based on hierarchical fuzzy synthetically evaluation and subjective evaluation method based on virtual cruise and interaction were researched. Finally, based on VS.NET development system and Multigen Vega Prime VR platform, the virtual ergonomics design and evaluation system for agricultural equipment was realized. The cab of a tractor was built and evaluated through the system. The results show that the system is an important approach to design and evaluate agricultural equipment cab.