Abstract: In order to obtain the load-time history of the fully-movable V-shaped tail structure and optimize the maintenance period of the structure, this paper innovatively proposes a load calibration test method for the production lines of the fully-movable V-shaped tail. By improving the loading method and the data acquisition method of strain bridge, problems such as narrow loading space and load force line interference of the V-shaped tail under the whole machine condition are solved, and the load calibration test for the production lines of V-shaped tail structure is realized. The comparison with the calibration test results under the whole machine condition shows that the relative error of the two test methods is less than 3%, and good test results are obtained. The research results of the paper have certain reference for the load calibration test of this kind of structure.