The invention provides a territorial space planning method, which comprises the following steps: 1, collecting territorial landform type resource data, wherein the territorial landform type resource data comprise plains, rivers, forests, mountainous regions and oceans, and dividing regions to be classified into a plurality of different sets according to landform types; 2, performing preliminary data analysis including soil, rock, vegetation, aquatic products and groundwater veins according to the territorial landform type resource data, and dividing the data into a plurality of different subsets according to the preliminary data analysis; 3, firstly collecting and obtaining original planning data information, and then establishing a territorial space planning data set, wherein the space planning data set comprises an urban planning data set, a rural planning data set, a forestry planning data set, an agricultural planning data set, a grassland planning data set, an ocean planning dataset and the like; and 4, processing the data.