The invention provides a multi-head camera and a frame synchronization method thereof. The multi-head camera comprises at least two image sensors and data sensing ends respectively corresponding to the image sensors, a power supply, a crystal oscillator, a data receiving end and a main control chip, wherein each image sensor and the corresponding data sending end form a camera unit, each camera unit shares a power supply and a crystal oscillator, and the camera unit sends the collected image data to the main control chip through the data receiving end to be processed. According to the multi-head camera provided by the invention, each camera unit shares a power supply and a crystal oscillator to effectively guarantee the synchronism of the working clock of each camera unit, so as to obtain a panoramic image with a good synchronous effect and overcome the problem in the background art that the frames of the multi-head camera are not synchronous, and the multi-head camera really realizes frame synchronization.