The utility model belongs to the field of airplane tests, and particularly relates to a supporting tool for an antenna support static test, which is used for supporting and fixing a static test pieceof an airplane vertical tail antenna support. And the vertical fin is higher, so that a higher loading platform needs to be designed for realizing test loading, and the test cost is increased. The utility model provides a supporting tool used for an antenna support static test. The device comprises a front supporting assembly and a rear supporting assembly, the front supporting assembly and the rear supporting assembly are provided with a first bottom plate and a second bottom plate respectively, a first pair of channel steel and a second pair of channel steel which extend longitudinally and have opposite openings are installed on the first bottom plate and the second bottom plate respectively, and a first base plate and a second base plate are installed at the upper ends of the first pairof channel steel and the second pair of channel steel respectively; and the lower surfaces of the first bottom plate and the second bottom plate are in the same plane, and the upper surfaces have angles matched with the antenna bracket. Therefore, the use of a real vertical fin structure as a supporting piece is avoided, and the test risk, test difficulty and test cost are greatly reduced.