Measure device of each elevation temperature of reservoir relates to hydraulic and hydroelectric engineering, especially is convenient for maintain the change for one kind, can measure the measure device of each elevation temperature of reservoir of each elevation temperature of reservoir. The utility model discloses install on the dam body of reservoir, wherein the device includes slide rail, slip dolly, water temperature sensor, data source and sink and data transmission line, and the slide rail setting is on the dam facing of dam body, and the slide rail is fixed on the dam body, and the slip dolly is installed on the slide rail and is followed the slide rail and slide, and water temperature sensor installs on the slip dolly, and data source and sink fixes at the dam body top, and water temperature sensor passes through the data transmission line and is connected with data source and sink. The utility model discloses the slip dolly that will be equipped with water temperature sensor slides on the slide rail for transporting water temperature sensor co -altitude position not to the reservoir in, detecting the temperature of different elevations, it needs to be changed or keep in repair to break down as water temperature sensor, and be smooth to the slide rail top on the dolly that will slide, can take off water temperature sensor.