本文从场论说给出了非线性网络中独立回路方程组形式，并将其改写成网孔方程组，求此方程组的解答，得到一个从非线性网络到线性网络的可按网孔行列式来计算独立回路矩阵元素的理论公式文中最后以实例验证了该公式的正确性. In this paper, the form of independent loop equations in nonlinear networks is given from the field theory, and rewritten as mesh equations to find the solution of this system of equations. A nonlinear network to a linear network can be based on the mesh determinant To calculate the independent loop matrix elements of the theoretical formula Finally, an example to verify the correctness of the formula.