The invention discloses a high-precision resistance balance for a civil aircraft high-speed wind tunnel test, belongs to the technical field of aerodynamic measurement, and aims at solving the problemthat the traditional balance design cannot meet the requirement of civil aircraft high-speed wind tunnel test. The balance comprises a cylindrical balance body with an integrated structure, and the intersection point of the transverse symmetry axis and the longitudinal symmetry axis of the balance body is the center of the balance body; resistance strain beams are symmetrically arranged on the left side and the right side of the center, a resistance strain beam slit is formed in any one of the upper end and the lower end of each resistance strain beam, and the resistance strain beam slits separate one end of each resistance strain beam from the balance body, so that the resistance strain beams form a T-shaped structure. According to the invention, the stability and resistance test sensitivity of the balance in use are improved, and the balance has the advantages of small mutual interference between structures, good overall rigidity, reasonable cooperation with related test pieces andthe like.