The invention discloses a measuring and checking method based on a segmental box girder stub matching prefabricated pedestal foundation. The method comprises the steps of 1, burying measuring points in a prefabricated pedestal, 2, setting an electronic level, 3, carrying out a first loading test, and carrying out an overall uniform loading test on each region on each prefabricated pedestal to eliminate non-elastic deformation, 4, carrying out a second loading test, carrying out full loading on the region I and the region II, respectively loading the region III according to the two conditions of the total weight of the template and the full loading weight after pouring, and simulating the load condition of a prefabricated construction process to measure the settlement amount before and after pouring of the to-be-poured beam, and 5, calculating the maximum differential settlement difference of the prefabricated pedestal through data analysis, and judging whether the maximum differentialsettlement difference meets the construction requirement or not. According to the method, the maximum differential settlement difference is difficult to detect and check, the reliability is insufficient, and the interference of non-elasticity on a measurement result can be avoided.