The two-target resolution algorithm enables four-channel monopulse radars to estimate the locations of the unresolved two-target within a 3dB beamwidth. However, the algorithm mentioned above has limited practical use due to the antenna pattern inconsistent of nonrectangular arrays. For this case, an dual-pulse two-target resolution (DTR) method for monopulse radars with a nonrectangular array configuration is proposed in this letter. By solving the eight equations from the received signals of two continuous pulses, matching functions with nulls at the real locations of the targets are established, which eliminate the errors caused by the nonrectangular array configuration. By searching the nulls, the locations of the two unresolved targets can be estimated accurately. Simulations demonstrate the superior performance of the DTR approach.