The invention relates to a training assessment device, in particular to a fire-extinguishing training assessment device based on ultrasonic wave detection technology. The device comprises one or moreultrasonic wave sensors, a detection device, an air feeding fan and a flame generating device, the one or more ultrasonic wave sensors are arranged to the flame generating device, the air feeding fanis connected with shell bodies of the one or more ultrasonic wave sensors through pipelines, the front end of each sensor shell body is provided with a ventilation hole, the detection device is connected with the one or more ultrasonic wave sensors through data lines, the ultrasonic wave sensors are provided one or more, and the detection device is internally provided with a CPU processor used fordetecting output signals of the sensors. By means of the fire-extinguishing training assessment device based on the ultrasonic wave detection technology, the fire-extinguishing training assessment device which continuously detects the quantity of fire extinguishing agents sprayed into the effective area in the fire extinguishing training facility to adjust the flame and give out training resultsutilizing the ultrasonic wave detection technology is provided, and the fire-extinguishing training assessment device based on the ultrasonic wave detection technology is reasonable in design and is economical and applicable.