1. A video surveillance system which monitors a moving object as a tracking target by way of a plurality of cameras in a surveillance zone, said system comprising: a plurality of cameras; moving direction detecting means for detecting the moving direction of the tracking target based on an image shot with said cameras; map information storage means for storing the map information on said surveillance zone; camera location storage means for storing the locations and imaging range information of said plurality of cameras in said surveillance zone; camera selection means for selecting a camera which will shoot the tracking target next from the moving direction information on the tracking target, map information on said zone, and locations and imaging range information of said plurality of cameras; screen composition means for synthesizing on a screen a picture from a camera shooting said tracking target and a picture from a camera selected by said camera selector, and screen display means for displaying a picture synthesized by said screen composition section.