Abstract: Thragh the analysis on the geotechnical data of the strata penetrated in the general engineering projects of Guangzhou city, foundation rock-soil may be divided into 12 main strata and 46 substrata, status and scope of all the substrata and division of hypo-substrata are introduced. Based on the division of strata, large regional ribbon geological profiles are anatomized, having incorporated past years the city engineering investigates data and other geological research results, engineering rock-soil environment is zoned into four Ⅰ grade zones and eleven Ⅱ zones. Through rock-soil mass characteristic study on each engineering geotechnical environment zone, evaluations on suitability of each zone's engineering construction above are drawn. The paper is the first time to synthetically research on wholly division of rock-soil mass strata, anatomization of large regional geological profiles and zoning of the engineering geotechnical environment Guangzhou vity. which needs to be solved before digital city commence to construct. Many digital engineering geology system in building should be fully paid attention so as to guarantee validity of the future finished system.