The invention discloses a method for processing a two-phase flow field by using photographed images. The method includes the following steps: putting tracer particles to an electrolyte, performing electrolysis and acquiring images, electrolyzing the tracer particles, acquiring images of the tracer particles and bubbles in the electrolyte; using a threshold to divide and obtaining images that only have the tracer particles and images that only have the bubbles; meshing all the images in a 32 pixel * 32 pixel, conducting similarity matching on each mesh in images of adjacent frames, finding similar meshes in the images of the adjacent frames and tracer particles that match in the similar meshes, on the basis of displacement of matching tracer particles and time interval between two frame of images, computing velocity flow field of a fluid, and obtaining the velocity flow fields of all the bubbles of the images of adjacent frames in the same manner, computing the images that have tracer particles and bubbles at the same time and obtaining the velocity flow field of the fluid phase and bubble phase.