Abstract: The impedance model is widely used in the stability analysis of multi-machine networks in wind farms (WFs) because of its clear physical meaning, but it still suffers from high dimensionality, high analytical difficulty, and poor scalability when studying WFs with more complex structures, and it's difficult to quantitatively describe the resonance participation of each active node in WFs by existing analytical methods. In this paper, a stability criterion and resonance participation risk assessment method for complex multi-node networks based on the interaction between active and passive networks is proposed. First, the active nodes and passive networks are divided according to the WFs sequential impedance network model, and the relationship between the self-stability and the conductance of the single active equipment and the passive network is analyzed; the stability criterion of the WFs sequential impedance network is derived based on the active multi-node equivalence model, and the resonance participation factor of each active node under the disturbance frequency and the coupling frequency is defined, the resonance participation of the WFs under the influence of the coupling frequency is realized. Finally, the effectiveness of the proposed analysis method is verified by applying specific examples.