The present study aimed to study the urban green areas of the municipality of Contagem in the period from 1999 to 2015, with the aid of the tools of remote sensing and geoprocessing. It was used the Landsat 7 images from the year 1999 and Landsat 8 from 2015, which were acquired for free from the United States Geological Service (USGS). One of the specific focuses of the work was to verify the modifications of the legislation referring to the urban green areas of the Areas of Relevant Ecological Interest-ARIE of the municipality of Contagem-MG in the Master Plans of 1995 and 2006, and to observe the changes in the period under analysis in the ARIE's in the years 1999 to 2015 by means of multitemporal analysis using the CCMT method and qualitative field work. To this end, the images were merged to improve spatial resolution, and software was used to perform the multitemporal color composition, which highlighted the areas that have changed. With the applied method and the analysis of the result, it was diagnosed that the urban green areas in the municipality have been altered, giving way to urban occupation in important areas of Brazilian Atlantic Forest.