The invention discloses an intelligent LED indication board based on a road Internet of Things monitoring system, and belongs to the technical field of road Internet of Things monitoring. The indication board comprises a stand column, a cross beam, a frame, a solar cell panel, an LED display, a wireless signal transceiver, an intelligent controller and a battery. The intelligent LED indication board carries out data interaction with the road Internet of Things monitoring system through the wireless signal transceiver, and the functions of accident broadcasting, emergency rescue vehicle guiding prompting, dynamic speed limit value setting, overweight and overspeed vehicle warning, LED screen brightness adjusting, road service condition reporting and the like are achieved. The LED indication board can be seamlessly jointed with the road Internet of Things monitoring system, and forms Internet of Things coordination with other LED indication boards, so that intelligent output of information such as pavement use performance is realized, and driving reference is provided for a driver. Meanwhile, the LED indication board has a solar power generation function, the power utilization burden of a road power grid is reduced, and energy is saved.