Abstract : We discussed the reducing subspaces of Toeplitz operators T z 1 N z 2 M N ≠ M on the weighted analytic function spaces of bidisk H w 2 ( D 2 ) . The result shows that if the weight w is of type-I, the structure of reducing subspaces of T z 1 N z 2 M N ≠ M on H w 2 D 2 is very simple.