In order to solve the degeneracy of the jamming ability of chaff cloud, a compound jamming method is proposed. The jamming process is as follows: The signal of enemy airborne fire control radar or air missile's seeker is received by airborne electronic jamming equipment, and then the signal is irradiated on chaff cloud by airborne complexity launching antenna. The jammed signal is reflected by chaff cloud, which will be received by enemy radar, forming a false target, and this false target is different from the false target formed by the irradiation on chaff cloud of radar signal. The simulation results show that using this compound scheme the scatter area of chaff cloud received by enemy is enlarged by even hundreds of times compared with the original one, enhances blanketed ratio. So the spread time of chaff cloud is shortened and the feasibility of this method is validated. The comprehensive jamming ability of aircraft is boosted by using the compound jamming method. Therefore, the method, to some extent, is of a stronger practical value.