Abstract: Since the vector sensor can simultaneouly pick up the sound pressure and vibration velocity，the informaation of phase shift among the sensors increases after being formed the array.The conventional beamforrning performance based on vector sensor array is obviously better than the presure sensor array，but its resolution is limited.The Multiple Signal Classification algorithm（MUSIC） has been studied，but it is based on processing the signals from the elements of the array，and hence the computational cost is large.A Beam Domain MUSIC algorithm（BMUSIC） based on the vector sensor array is used.In this algorithm，the spatial data from the elements of the vector sensors array are transfomed to that in the beam space at first，then MUSIC algorithm is used for the transformed data.As a result，the dimension reduced processing is realized and the computational cost is decreased，in addition，the noise outside the scanning sector can be reduced further.The computer simulation has been done for BMUSIC compared with the conventional MUSIC.The results indicate that by using the algorithm proposed in this paper，the obtained resolution is simular to that of coventional MUSIC method.