In modern electronic warfare, the cooperative jamming of multiple jammers is usually adopted, so the problem of jamming resource allocation needs to be studied. In order to solve the problem, the jamming model is established, and the jamming blanked zone of single jammer and multiple jammers is simulated. Combining with the formation principle of jamming blanked zone and taking jamming power as the assignment index, an active jamming target assignment method based on adaptive genetic algorithm is proposed. Its main idea is to search the location of suppression points and target assignment simultaneously by using genetic algorithm. The feasibility of this method is proved by simulation.