A GPS-based target tracking system, comprising: a first camera and a second camera; the first camera is configured for determining a to-be-tracked target in a first monitoring image shot by the first camera, tracking the to-be-tracked target, obtaining GPS coordinates of the to-be-tracked target during the tracking, and sending the GPS coordinates of the to-be-tracked target to the second camera; and the second camera is configured for adjusting a shooting angle according to received GPS coordinates of the to-be-tracked target, and tracking the to-be-tracked target after detecting the to-be-tracked target in a second monitoring image shot by the second camera; wherein, the first camera is further configured for: predicting a camera by which the to-be-tracked target is to pass based on the GPS coordinates of the to-be-tracked target obtained during the tracking, and taking the predicted camera as the second camera; and sending the GPS coordinates of the to-be-tracked target to the second camera; wherein, the second camera is a dome camera configured for: determining PT coordinates of the dome camera at the time of capturing the to-be-tracked target according to received GPS coordinates of the to-be-tracked target; and adjusting a shooting angle of the dome camera based on the PT coordinates. the first camera is configured for determining a to-be-tracked target in a first monitoring image shot by the first camera, tracking the to-be-tracked target, obtaining GPS coordinates of the to-be-tracked target during the tracking, and sending the GPS coordinates of the to-be-tracked target to the second camera; and the second camera is configured for adjusting a shooting angle according to received GPS coordinates of the to-be-tracked target, and tracking the to-be-tracked target after detecting the to-be-tracked target in a second monitoring image shot by the second camera; wherein, the first camera is further configured for: predicting a camera by which the to-be-tracked target is to pass based on the GPS coordinates of the to-be-tracked target obtained during the tracking, and taking the predicted camera as the second camera; and sending the GPS coordinates of the to-be-tracked target to the second camera; wherein, the second camera is a dome camera configured for: determining PT coordinates of the dome camera at the time of capturing the to-be-tracked target according to received GPS coordinates of the to-be-tracked target; and adjusting a shooting angle of the dome camera based on the PT coordinates. predicting a camera by which the to-be-tracked target is to pass based on the GPS coordinates of the to-be-tracked target obtained during the tracking, and taking the predicted camera as the second camera; and sending the GPS coordinates of the to-be-tracked target to the second camera; wherein, the second camera is a dome camera configured for: determining PT coordinates of the dome camera at the time of capturing the to-be-tracked target according to received GPS coordinates of the to-be-tracked target; and adjusting a shooting angle of the dome camera based on the PT coordinates. determining PT coordinates of the dome camera at the time of capturing the to-be-tracked target according to received GPS coordinates of the to-be-tracked target; and adjusting a shooting angle of the dome camera based on the PT coordinates.