The invention relates to the technical field of display, particularly provides a video synchronization device for multiple splice displays and display equipment, and aims at solving the technical problem of how to synchronize random multiple splice displays with different resolutions. For achieving the purpose, the video synchronization device comprises a control module, a synchronization signal generation module and multiple output modules, one end of each output module is connected with the synchronization signal generation module, and the other ends of the output modules are connected with image display screens of the splice displays; the synchronization signal generation module is used for generating synchronization signals of the splice displays and selects a synchronization output signal according to a synchronization instruction sent by the control module; and the output modules are used for generating video time sequences of the image display screens and receiving the synchronization signals output by the synchronization signal generation module according to the synchronization instruction sent by the control module to achieve synchronization. Furthermore, the display equipment comprises the video synchronization device. According to the technical scheme, video synchronization can be conducted on random multiple splice displays with different resolutions.