A jig for calibrating a light transceiver module includes a disposition region for the light transceiver module on which the light transceiver module is suitably disposed and an arc structure, which takes the position of the disposition region for the light transceiver module as a circle center thereof and includes reflective regions, light-absorbing regions and a feature region. The reflective regions and light-absorbing regions are alternately arranged, and the feature region is a region for reflection or for absorbing light. When the feature region is the region for reflection, the width of the region for reflection is different from the width of each the reflective region, and when the feature region is the region for absorbing light, the width of the region for absorbing light is different from width of each of the light-absorbing regions. A calibration method is also provided.