A static spectral polarization difference imaging technique based on liquid crystal tunable filter (LCTF) and liquid crystal variable retardation (LCVR) is proposed. LCVR is used to rotate the polarization direction of different wavelength imaging beam, LCTF is used to filter the wavelength and acts also as an analyzer. By programming the transmitted light wavelength and two orthogonal linear polarization states can be set and controlled. Photo-detector array is used to complete the image acquisition. And then the spectral polarization difference images are obtained through image processing. In this paper, a static spectral polarization difference imager prototype is completed and preliminary test results are achieved. It does not have any mechanical moving parts, and has the advantages of good stability, flexible operation, simple and intuitive data processing and so on.