The invention discloses an individual interpersonal relationship visual inference method for heterogeneous city data. The method comprises the steps that (1) data is acquired; (2) a city region of the data in the step (1) is encoded into a quadtree region, and geographical location information is encoded through a quadtree according to longitude and latitude locations of the quadtree region in a city; (3) encoded data is stored in a classified mode according to characteristics; (4) the geographical location information is subjected to unified time-space and trace matching; (5) an analysis target is selected; (6) a movement mode of the analysis target is determined according to a trace time line graph; (7) different types of interpersonal relationships of the analysis target are determined through trace matching according to the movement mode of the analysis target; and (8) the interpersonal relationship between an obtained optimal matching object and the target is verified by analyzing all trace matching conditions of the optimal matching object and the target. The method can be applied to target life mode analysis, interpersonal relationship analysis, interpersonal relationship verification and other aspects.