Abstract: An information management system of soil samples distribution based on the public API provided by 51Ditu was developed. The system included a spatial database with the geo-information about the Administrative Districts and an attribute database composed of the soil samples geo-information. The map that showed in the client web browser was drawn with the public API supported by the 51Ditu. The geo-information of soil samples supplied through the PHP function from MySQL database is overlaid on the map with the Ajax technology.