In the microphone array sound source localization, different microphone arrays and different source frequencies will have certain impacts on the results. In this paper,Time Difference of Arrival(TDOA) method is employed, and 16 microphones are utilized to form cross array, concentric circle array, square array, L-type array and Y-type array respectively. The positioning errors of microphone array with different shapes under different frequency sources are discussed. Simulation analysis is carried out on Matlab to obtain more accurate sound source positioning results. A concentric circle array for sound source location of microphone array is proposed, which has the smallest error.