A sensor support system includes a sensor and a terminal device configured to display form information of the sensor. The sensor includes a two-dimensional code (storage tag) which can be read from the terminal device and which is configured to store the form information of the sensor. The terminal device is configured to calculate position information of the sensor from an image of the sensor, configured to generate a virtual image of the form information of the sensor, and configured to display on a display an image in which the virtual image is superimposed on an image of the sensor taken by a camera.