A target tracking method to be executed by a computing device, comprising: generating an optical flow image in accordance with a series of event data from a dynamic vision sensor, each event being triggered by movement of a target object relative to the dynamic vision sensor, wherein the event data comprises a coordinate position and a timestamp of each triggered event, wherein the generating the optical flow image in accordance with a series of event data from the dynamic vision sensor comprises: dividing the event data within a predetermined interval into a predetermined quantity of event segments in a chronological order of the timestamps; assigning different pixel values for events within different event segments; and generating the optical flow image in accordance with the coordinate position and the pixel value of each event; determining a movement speed and a movement direction of at least one target object in a current image frame in accordance with the optical flow image; predicting a position of a corresponding target object in a next image frame in accordance with the movement direction and the movement speed; and when a predicted position is within a range of a field of view, taking the corresponding target object as a to-be-tracked target, characterized by the target tracking method further comprising: the determining the movement speed and the movement direction of the at least one target object in the current image frame in accordance with the optical flow image comprises: calculating a target region corresponding to each target object in the current image frame; performing clustering treatment on pixels in each target region to acquire a first region and a second region corresponding to each target object, a region corresponding to one type of pixels with small pixel values is taken as the first region and a region corresponding to another type of pixels with large pixel values is taken as the second region; and taking a direction from the first region toward the second region as the movement direction of the corresponding target object. generating an optical flow image in accordance with a series of event data from a dynamic vision sensor, each event being triggered by movement of a target object relative to the dynamic vision sensor, wherein the event data comprises a coordinate position and a timestamp of each triggered event, wherein the generating the optical flow image in accordance with a series of event data from the dynamic vision sensor comprises: dividing the event data within a predetermined interval into a predetermined quantity of event segments in a chronological order of the timestamps; assigning different pixel values for events within different event segments; and generating the optical flow image in accordance with the coordinate position and the pixel value of each event; determining a movement speed and a movement direction of at least one target object in a current image frame in accordance with the optical flow image; predicting a position of a corresponding target object in a next image frame in accordance with the movement direction and the movement speed; and when a predicted position is within a range of a field of view, taking the corresponding target object as a to-be-tracked target, characterized by the target tracking method further comprising: the determining the movement speed and the movement direction of the at least one target object in the current image frame in accordance with the optical flow image comprises: calculating a target region corresponding to each target object in the current image frame; performing clustering treatment on pixels in each target region to acquire a first region and a second region corresponding to each target object, a region corresponding to one type of pixels with small pixel values is taken as the first region and a region corresponding to another type of pixels with large pixel values is taken as the second region; and taking a direction from the first region toward the second region as the movement direction of the corresponding target object.