A drone apparatus and a method for deploying a drone working zone are provided. The drone apparatus includes an aircraft body, a communication device, a positioning device and a flight controller. The flight controller is configured to: set edge rules of a working zone unit used to construct a working zone for the drone apparatus to work around a bridge; control the aircraft body to fly along a target section selected in the bridge according to a control signal received by the communication device, and calculate positions of multiple points of interest (POIs) passed by during the flight using the positioning device; generate one working zone unit with positions of adjacent two of the POIs according to the edge rules of the working zone unit; and combine multiple working zone units generated by using positions of all the POIs to construct and deploy the working zone of the target section.