The Ti₃C₂T_x MXene/WPU composite double-layer films was prepared by the alternate suction filtration， and the microscopic morphology was characterized by scanning electron microscope （SEM） and transmission electron microscope （TEM），and the crystal structure was tested by X-ray diffractometer （XRD）.And electromagnetic shielding performance was tested by vector network.The results show that a few layers of Ti₃C₂T_x can be prepared by ultrasonic centrifugation，the composite double-layer films have high flexibility，excellent conductivity and electromagnetic shielding performance， the surface resistance of the composite double-layer film is 3.57 Ω. The electromagnetic shielding results show that the shielding performance of the composite film of MWPU_3：1 is 37.9 dB. In X-band and K-band，MWPU_3：1 composite film has better performance， and the composite films is absorbent electromagnetic shielding material.