A new algorithm for multi-angle estimation in bistatic MIMO radar based on the uniform circular array is presented in this topic. The output signal of the array antennas is analyzed, showing trilinear model characteristics. The multi-angle can be estimated from the matrices via low-rank decomposition based on the uniqueness of PARAFAC decomposition. The method doesn’t require searching spectral peak or pairing parameters .Compared with ESPRIT method，the proposed algorithm has high precision in parameter estimation and works well under small sizes. The simulation results verify its effectiveness.