This droplet flow rate measuring device is provided with an image capturing unit which captures images of droplets dripping in a drip tube, and an optical sensor which detects the droplets. In an initial period, the image capturing unit and the optical sensor are operated, the droplet volume and the number of dripped droplets are measured on the basis of the images of the droplets captured by the image capturing unit, and the number of dripped droplets is measured on the basis of the number of times the luminous intensity of light received by the optical sensor falls below a prescribed value, and the flow rate of the droplets is measured on the basis of the droplet volume measured by the image capturing unit and the number of dripped droplets measured by the image capturing unit or the optical sensor (first mode). If the number of dripped droplets measured by the image capturing unit and the number of dripped droplets measured by the optical sensor are the same in the initial period, then after the initial period has elapsed, then only the optical sensor is operated, without the image capturing unit being operated, and the flow rate of the droplets is measured on the basis of the droplet volume measured by the image capturing unit in the initial period and the number of dripped droplets measured by the optical sensor after the initial period has elapsed (second mode).Linvention concerne un dispositif de mesure de débit de gouttelettes comprenant une unité de capture dimage qui capture des images de gouttelettes ségouttant dans un tube goutte-à-goutte et un capteur optique qui détecte les gouttelettes. Dans une période initiale, lunité de capture dimage et le capteur optique sont actionnés, le volume de gouttelette et le nombre de gouttelettes égouttées sont mesurés en fonction des images des gouttelettes capturées par lunité de capture dimage et le nombre de gouttelettes égouttées est mesuré en fonction du nombre de fois où lintensité lumineuse de la lumière reçue p
