In order to solve the problem of multi-channel engineering support task allocation in land battlefield, a task allocation method based on improved genetic algorithm is proposed. Taking the task completion time and other elements as the optimization goal, and considering the task execution order and other constraints, the engineering support task allocation model is constructed; the explosion operator is added into the genetic algorithm, and the algorithm is improved by combining with the greedy allocation idea of the multidimensional dynamic list scheduling to form the task allocation method; simulation experiments are carried out based on the combat cases, and the solution is solved by the task allocation method to verify the effectiveness and superiority.