To achieve the blind jamming cancellation and signal recovery under MIMO(multiple-input multiple-output) system with intended jamming attacks, a structure of dual-array-antenna receiver was proposed to achieve the blind jamming cancellation without the consideration of the correlation between jamming and the transmitted signal. Data free of jamming have an obvious characteristic of tensor slice. They were stacked into a 3-order tensor and then the CP decomposition was performed to recover the original signal directly without channel estimation. Compared with the traditional method based on channel estimation, the tensor-based algorithm can avoid the error caused by channel estimation, which can largely improve the recovery precision. Simulation results show that the tensorbased method achieves better recovery performance with less training overhead than the traditional training sequence based channel estimation method.