The invertibility tests and inversion formulas of nonsingular generalized Cauchy and Cauchy Vandermonde block matrices are given based on the use of their displacement structure equations.

• 利用广义柯西与柯西范德蒙块矩阵的位移结构方程；给出这2类块矩阵的可逆性准则以及求逆矩阵的表示式.