Abstract: Aiming at the multidimensional resource management problem of multifunctional radar, a frequency adaptive MTPEDF(FA-MTPEDF) task scheduling method based on multiple task parallel earliest deadline first (MTPEDF) algorithm is proposed. In this method, frequency conversion optimization is performed first by utilizing the adjustability of task working frequency when the task spectrum resource conflict, and the execution time is delayed only after the optimization fails, so as to make full use of the system spectrum resource and improve the system event capacity. Simulation results show that the system time, aperture, energy and spectrum resources can be allocated reasonably by the proposed method. Compared with traditional earliest deadline first (EDF) algorithm and MTPEDF algorithm, the proposed method has lower task loss rate and higher resource utilization rate, which can effectively improve the multiple task execution capacity and resource utilization capacity of multifunctional radar.