Abstract: A low latency communication routing technology based on the power Internet of Things is proposed to address the issues of prolonged communication transmission time and low transmission efficiency in the power Internet of Things. Firstly, with the total transmission delay as the optimization objective, a low latency routing transmission method based on joint optimization of access network and core network bandwidth is adopted to optimize business routing resources. The simulation results show that with the increase of delay sensitive business data packets, the average transmission delay of the proposed joint bandwidth optimization method is reduced by 60.7% compared to the uniform bandwidth scheme, and the transmission efficiency is significantly higher. Under different packet sizes, the proposed multipath task transmission strategy reduces the average latency by 37.18% and 18.8% compared to single task transmission and equal task transmission strategies. This indicates that the proposed method can reduce the transmission delay time and operation cost of the power Internet of Things, and improve the data transmission performance and delay transmission efficiency of the power grid.