The invention belongs to the technical field of antennas, and particularly relates to a dual-phase center height-measurement frequency scanning antenna. The dual-phase center height-measurement frequency scanning antenna comprises a dielectric block and two same-structure receiving antennas, wherein the two receiving antennas are fixedly connected, the dielectric block is fixedly connected with the two receiving antennas, each receiving antenna comprises a slow wave line assembly and two wing plates, a receiving hole is formed in an inlet of a straight waveguide cavity of the slow wave line assembly, the two wing plates are respectively arranged at two sides of the receiving hole, a waveguide converter is arranged at one end part of the slow wave line cavity of the slow wave line assembly,the two receiving antennas are vertically arranged in parallel, the slow wave line assemblies of the two receiving antennas are fixedly connected, and the dielectric block is fixedly arranged on thewing plates of the two receiving antennas. By the antenna, a relatively large pitching measurement angle range is achieved on the premise of no influence on the working performance of a single-phase central frequency scanning antenna, and the pitching measurement demand of actual engineering application is satisfied.