Complex pipeline detection robot and detection method

The invention relates to a complex pipeline detection robot and a detection method, and relates to the technical field of pipeline detection.The complex pipeline detection robot comprises a robot body, a camera is arranged on the robot body, a light supplementing lamp used for supplementing light for the camera is arranged on the robot body, and the robot body comprises a plurality of robot bodies which are detachably connected; a plurality of walking wheels used for driving the machine bodies to move are movably connected to the machine bodies. When the machine bodies are located in the pipeline, light can be supplemented to the camera through the light supplementing lamp, then the definition of the interior of the pipeline shot by the camera is improved, and when the machine bodies pass through the bent pipe, connection between the multiple machine bodies is removed, and then the multiple machine bodies are operated to pass through the bent pipe one by one; when passing through a variable-diameter pipeline,