This paper introduces the method of temote sensing model for ecological change monitoring and evalution after forest fire. According to the investigation of regenration and ecological change of Yunnan Pinus fire slashes by remote sensing in Panxi, it analyses spatial distribution and change regular of ecofactors and determines major ecofactors and its evaluation criteria. Basing on remote sensing information and the result of fuzzy synthetical evalution to eight factors or topography soil, stand and degress of deforestation and the years after forest fire, creats remote sensing model for ecological change monitoring and evaluation after forest fire. This model makes us achive expected purpose. For forest ecological dynamic monitoring system by remote sensing, it's discussed that the data of monitoring factors and vegetation index are abtained.