Abstract: An image synchronization method for multiple cameras, comprising the following steps: receiving a first video of a first camera and a second video of a second camera; capturing a first object in the first video and a second object in the second video; determining whether the first object is the same as the second object; if yes, transferring a first coordinate of the first object and a second coordinate of the second object to a uniform coordinate; regulating a timing sequence of the second video to calculate a plurality of multi-object tracking accuracy values for the second video and the first video and identifying a maximum multi-object tracking accuracy value; generating a time compensation value according to a time different corresponding to the maximum multi-object tracking accuracy value and synchronizing the first camera and the second camera according to the time compensation.