Automotive antiskid control system schedulability analysis is a difficult issue in the design stage. In this paper, the Structural Analysis and Design Language AADL techniques were used for ABS and ASR control system modelling. According to real time system, task scheduling with thread, computation time and the relationship between processor performance, and by selecting different performance processors without change in the task number, and by using tools OSATE to analyze the system model，a method to solve the problem effectively was demonstrated. This modelling method provides a new approach for the system schedulability analysis and optimal design in the area.