This study aims to conduct the analysis of the physical fragility of the Municipal Natural Park Luis Roberto Correia Sampaio, correlating the different physical factors of the environment, analysing of the physical fragility of the environment supporting the environmental planning of this Conservation Unit. Checking through this correlation the consequences for the environment, determining the potential and emerging fragility of Park Municipal Natural Luis Roberto Correia Sampaio, Municipal Conservation Unit of Integral Protection, located in the municipality of Barbalha, CE. The choice of this Conservation Unit gave for its environmental importance, which in its natural features makes it unique. Therefore we adopted a methodology, which is based on cross-thematic maps of soil, slope and vegetation cover using geoprocessing tools. The tools used allowed the crossing of cartographic bases to the area classification by environmental fragility levels segregating the area in five levels of fragility, ranging from very weak to very strong. This type of study has practical application, since it provides a broad overview of the study area and serves as a tool for planning geared to sustainable development, and application of conservation practices.