The invention belongs to the field of oil exploitation foam flooding, and discloses a method and a device for determining oil reservoir foam seepage bubble generation and breaking speed, and the method specifically comprises the following steps: introducing foam into a microscopic visual model, shooting a foam video within a certain time through a color camera, according to the method, videos at different moments are screenshot through computer software to obtain foam images at multiple time points, counting bubbles in the images through ImageJ, obtaining the breaking speed and the generating speed of the bubbles through calculation according to the formula, and therefore the stability of the bubbles in the porous medium is indirectly judged. The method for determining the bubble generation and breaking speed is easy, convenient, rapid and accurate to operate, after the bubble generation and breaking speed of oil reservoir foam seepage is determined, input parameters can be provided for a total amount balance model for simulating foam seepage, the calculation result of oil reservoir numerical simulation is more accurate, and foam flooding is helped to achieve a better flooding effect.