A technology of shared aperture with multiple interleaved sub-arrays based on simulated annealing algorithm was proposed.Different beam frequencies were taken as the constraint condition, the grid spacing of the antenna array and the position of the array element were used as the optimal variables, and the peak side lobe level of the two sub-arrays was used as the objective function.Firstly, the grid spacing of the array element was constrained by setting a minimum spacing and a maximum spacing.The grid distance of the array element was calculated after determining the distribution of the array elements.Then, the simulated annealing algorithm was used to optimize the grid spacing and distribution of the array elements, and the value of the objective function was calculated and preserved.Finally, two beams with different frequencies and orientations were generated.The simulation results show that the proposed algorithm can effectively reduce the peak side lobe level of the two sub-arrays, and the two beam patterns with different frequencies are similar in performance.