Abstract: The open pit mining plan preparation has defects such as inflexibility and complexity of operation in the parallel advance mining and stripping mode. To solve the problems caused by these defects such as poor preparation results, mining quality fluctuations and long preparation period, an automatic preparation method of open pit mining plan in this model is proposed. The solution idea is determined by the overall architectural design, and then the automatic programming mathematical model is constructed for this model. The results show that the generated schedules are highly automated, less subjective and disturbed by subjective factors, and can obtain the optimal schedule preparation results under current conditions. It can be proved that this open pit mining plan automatic preparation method is applicable to parallel advance mining and stripping mode. The deviation value of each component target is small, and the results are fast and stable. It can bring high economic benefits to the production of mining enterprises.