Aiming at the problems of fuzzy beamforming direction, low main lobe gain and high side lobe in non-overlapping fixed sector, an overlapping array algorithm for circular conformal was designed. In this algorithm, the circular array is divided into several 120° overlapping sectors, and the number of sectors and overlapping areas can be adjusted. At the same time, directed array and Taylor weighting are adopted to make the beam emitted in the desired direction located in the center of the divided sectors, so as to obtain the maximum gain. The results show that, compared with the non-overlapping circular arrays with fixed sector, the side-lobe suppression of the single-beam emitted by the overlapping circular arrays decreases from -10.16dB to -21.2dB. The sidelobe suppression decreased from -18.92dB to -24.18dB, and the main lobe gain increased from 10.76dB to 15.32dB. When transmitting eight beams, the main lobe of each beam points accurately without deviation and the side lobe is low. The results show that, compared with the traditional fixed array beamforming algorithm, the overlapping array algorithm performs better in main lobe pointing, main lobe gain and side lobe suppression.