An early warning analysis method for eutrophication of a planned artificial body of water, the method comprising: establishing a 3D model of a planned artificial body of water based on data corresponding to a plan of the body of water, the 3D model of the planned artificial body of water at least comprising a planned artificial body of water and surrounding buildings (S101); based on the 3D model of the planned artificial body of water, analyzing the planned body of water via an ecological simulation technique to obtain at least one of the following analytical results including mobility and water changing cycle, source water algae species, planned water depth, water surface wind farm, illumination and temperature of the planned artificial body of water (S102); based on at least one of the analytical results of ecological simulation, evaluating the risk of eutrophication of the planned artificial body of water (S103). The method enables the risk of eutrophication of a planned artificial body of water to be evaluated in city planning and designing, thus providing a basis for preventing and controlling the eutrophication of the planned artificial body of water.
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