Abstract: The shape of tyre section is very irregular, and the skeleton material and steel ring are embedded in the rubber material layer, which makes its meshing workload heavy, time-consuming and laborious. Based on the Python secondary development technology provided by Abaqus software, this paper proposed the method of "zoning and limiting grid seeds", built the automatic processing of tyre section grid, and developed the automatic division program of complex tyre section grid. It could realize the efficient and accurate division of complex tyre section grid within 1 minute by inputting several parameters such as the number and size of grid seeds. The elements with error and warning information account for 0% and 0.78% of the total elements respectively, which meet the convergence requirements of finite element simulation analysis.