Abstract: At present, the target radar cross section characteristic adjustment based on metasurface has been widely studied, and further adjustment of imaging features has gradually become a hot spot of research and application. The local echo adjustment ability based on metasurface has shown direct application value. The phase metasurface design based on echo enhancement and cancellation reduction mechanism based on W-band millimeter wave radar imaging system are studied, and the changes of image features of flat plate/dihedral angle combination targets is discussed in this paper. In order to meet the need of changing imaging features, this paper focuses on extending the adjustable range. Based on the good effect of echo enhanced metasurface, the optimization design of phase cancellation metasurface is carried out, and the echo reduction effect is enhanced by local phase feature enhancement and group cancellation arrangement. Combined with the structure characteristics of W-band metasurface, which is ultra-thin, flexible and easy to attach, it is verified that the enhanced cancelling integrated echo characteristic adjustment method with large adjustment range can significantly change the characteristics of microwave image.