Aiming at the problem of large computational volume of the traditional two-dimensional direction-of-aperture (DOA) estimation spectral search, a two-dimensional DOA estimation method under the parallel reciprocal mass array is proposed.The method proposed in this paper transforms the two-dimensional spectral search problem into two one-dimensional estimation problems, and then performs polynomial rooting on the two one-dimensional angular estimations, respectively, and finally matches the angular parameters to complete the two-dimensional DOA estimation. The algorithm in this paper makes full use of the information of the array received data and the array aperture to identify more sources. Compared with the traditional two-dimensional DOA estimation algorithm, the algorithm in this paper avoids the two-dimensional spectral search, which greatly reduces the computational complexity, and has higher estimation accuracy with low signal-to-noise ratio (SNR) and small snapshots, and the results of the simulation experiments verify the effectiveness and reliability of the algorithm.