According to the discrepancy between the measured polarization information obtained from polarization remote sensing detection and the real polarization information, the measuring accuracy of the polarimatric bidirectional reflectance distribution function (BRDF), the polarization degree and the polarization phase angle can be affected by three system error sources in polarization remote imaging system, which is discussed. The error analysis model of polarization remote sensing detection is established. The influence of polarizer angle positioning error on measuring Stokes parameters is analyzed, and the influence of polarizer angle orientation on polarization detection accuracy is numerically simulated; based on the feature space interval of polarization remote sensing detection and the resolution ratio of the imaging CCD, the influence of the visual field space coincidence error on BRDF is discussed; then the influence of photon noise of imaging system and other inherent systematic errors on polarization detection results is analyzed. According to error transfer principle, the measuring errors caused by three error sources are compounded, and the general error model with respect to linear polarization degree and polarization phase angle is derived. Experiments show the error model of polarization remote sensing detection can truly reflect the influence of polarization detection system error sources on measuring accuracy of BRDF.