The invention discloses a tide staff water level measurement method based on dual-waveband imaging, and belongs to the technical field of water level measurement. A camera with a dual-waveband imagingfunction is adopted, and visible light and near-infrared images are used for system calibration and water level measurement links respectively. During the system calibration link, firstly, a measurement system is arranged and a tide staff image of the visible light is obtained; secondly, according to a standard pattern of a tide staff to be measured, a template image is designed; finally througha selected matching control point, a perspective projection transformation relation between the tide staff image and the template image is built; during the water level measurement link, firstly, a near-infrared tide staff image is obtained and then matched with the template image for rectification, binarization processing is conducted on the rectification image, waterline coordinates are measuredin a horizontal projection curve of the binarization image, and according to the physical resolution of the template image, the waterline coordinates are converted into an actual water level value. According to the tide staff water level measurement method based on dual-waveband imaging, the scales and characters on the tide staff do not need to be measured and identified, and the robustness of low-resolution images photographed under a complex site condition is high.