机构耦合度和结构因子，是有序单开链法研究机构的组成原理、运动学与动力学的重要参数，在不含复铰运动链耦合度算法的基础上，根据双色拓扑图，给出了含复铰运动链耦合度算法，最后通过实例验证了算法的正确性。

In ordinal single open chain method, coupling degree and structure factor of mechanism are important parameters for research of mechanism structure principle, kinematics, and dynamics. The algorithm of coupling degree for the kinematic chain with compound hinges was developed based on the algorithm for the kinematic chain without compound hinges and dual-color topology graph. The correctness of the algorithm was verified by a practical example.