The invention discloses a patrol inspection device based on augmented reality and used for detecting equipment temperature. The patrol inspection device is characterized in that the patrol inspectiondevice comprises an infrared camera and a visible light camera, which are used for synchronously obtaining an infrared image and a visible light image comprising a first scene of a target device respectively, augmented reality glasses and a controller. The controller identifies the target device from the visible light image and determines temperature information of the target device from the infrared image, determines the position of the target device in a glasses frame camera image, couples a display image of the temperature information of the target device and an actual image and then, projects the coupled image to the eyes of a patrol inspector. The patrol inspection device based on augmented reality can detect the equipment temperature under the condition of being away from the targetdevice, thereby improving patrol inspection efficiency and quality, preventing the patrol inspector from entering dangerous environment and effectively preventing false detection and detection missing.