Abstract: This article introduced the structure of an X-ray image intensifier video frequency imaging system and its performance, analyzed the influence factors on imaging quality. The non-uniformity of transformation screen and the CCD imaging system response was the primary factor to affect the examination sensitivity; The quantum fluctuation and the scattering-created stochastic noise also seriously influenced imaging quality. This article first used carries model of non-uniformity correction to the system, then applied the recursive filter noise reduction for the stochastic noise, resulting in an effective improvement on systems imaging quality as compared withe the sole denoising method.