The invention discloses a bistatic MIMO radar array target angle estimation and mutual coupling error calibration method. The method comprises the following steps: 1, data received by the bistatic MIMO radar system at tl time are x(tl); 2, a covariance matrix R for received data vectors x(tl) is calculated, a feature value of the R is decomposed, and a signal sub space matrix Es is obtained; 3, a matrix Er is built, and sub matrixes Er1 and Er2 are extracted; 4, a feature value of a matrix as described in the specifications is decomposed, and a feature value matrix phir and a feature vector matrix Q are obtained; 5, according to diagonal line elements of the matrix phir, a DOA is estimated; 6, a constant matrix Ft and a transformation matrix B are built; 7, according to the constant matrix Ft, the transformation matrix B and the matrix Es in the second step, a matrix Et is built, and sub matrixes Et1 and Et2 for the Et are extracted; 8, by using the Q in the fourth step and the Et1 and the Et2 in the seventh step, a matrix phit is built; and 9, according to the diagonal line elements of the matrix phit, a DOD is estimated. Spectral peak search does not need to be carried out on the angle, the estimation precision is high, and good estimation performance can be obtained even in a low signal-to-noise ratio environment.