The main aim of the master's thesis is the analyses and presentation of the procedures for the positional and geometric quality improvement of cadastral index maps, which is illustrated on the selected cadastral municipality. The positional quality improvement of a cadastral index map is based on the land cadastre data and the so-called membrane method using the software Systra. In the introductory part, the reasons of the heterogeneous positional quality of cadastral index maps are presented, which is necessary for the correct interpretation of the current cadastral data quality. The introduction is followed by the analysis of data quality regarding positions (coordinates) of the cadastral boundary points. The quality is conditioned by the method and technology of the cadastral survey, data processing method as well as by the legislation, which has been giving a framework for the cadastral survey and its maintenance, and has always been a subject of change. A special emphasis is given on the description of a preparatory work, which is crucial for the effectiveness of the positional quality improvement of cadastral index maps using the selected method. In the continuation of the thesis, the study area, i.e. the selected cadastral municipality of Žitence, is presented, together with the neighbouring cadastral municipalities. For the purpose of the positional quality improvement of the cadastral index map, the analysis of the available data has been done for the selected cadastre municipality. Furthermore, the procedure of input data preparation using the software tool SysGeoPro, and data processing using the software solution Systra are presented. As a conclusion, the intermediate and final results of the positional accuracy improvement of the selected cadastral map are given.