The invention discloses a Zigbee accessed electric wheelchair controller and a control method. The controller comprises a main control panel, a data acquisition board, a motor control box and a wireless communication module, wherein the wireless communication module is connected and communicated with the main control panel; the data acquisition board is connected with the main control panel; and the motor control box is connected with the main control panel. The control method comprises the following steps: (1) acquiring parameters; (2) establishing a control model; (3) establishing wireless communication; and (4) executing control commands: inputting the parameters acquired in the step (1) into the control model obtained in the step (2) to obtain the motion parameters of the electric wheelchair, and transmitting the motion parameters of the electric wheelchair to a wireless sensor network through the step (3) so that the wireless sensor network sends semantic commands to control the motion of the electric wheelchair. The design method of the controller reduces the computing burden of nodes in the wireless sensor network, is economic and effective, and satisfies the requirement of the wireless sensor network on the electric wheelchair.