Local synchronization processing method and device based on time accumulation error

The invention provides a local synchronization processing method and device based on a time accumulation error. The method comprises the steps: calculating the accumulation error of a plurality of preset time periods when a normal signal is obtained and only a control end does not play a light program; after accumulating for a preset number of days, calculating an accumulative error mean value corresponding to each preset time period according to the acquired accumulative errors of the multiple preset time periods every day; when a network fault of the intelligent node end is detected, recording the current time, correspondingly compensating the time in each preset time period according to the accumulated error mean value calculated in the step S2, and modifying the local clock according to the compensation result. According to the method, the technology that the nodes can be synchronized by themselves in a short time when the network and GPS signals are lost can be met, and the methodis easy to implement, lo