The invention discloses a multifunctional lamp post controller based on IoT (Internet of Things) and a control method, and the controller belongs to an IoT controller. The controller comprises a control acquisition mainboard and a routing gateway mainboard, and the control acquisition mainboard is also connected to a power supply module. The routing gateway mainboard is connected to the power supply module through the control acquisition mainboard. The control acquisition mainboard comprises a microprocessor module, and the microprocessor module is respectively connected to a pin signal interface, a switching value signal input end and a communication interface which are arranged on the control acquisition mainboard. The control acquisition mainboard and the routing gateway mainboard are integrated in the controller, therefore, the control acquisition mainboard can acquire an abnormal log and a running log after the gateway module mainboard is powered on to run, thereof, all equipmentfacilities on an intelligent lamp post are monitored and controlled by using one controller, the management is facilitated, and the information interaction between the intelligent lamp post and a unified intelligent city management platform is facilitated.