The article explores the collaborative optimization control strategy for voltage quality in distribution networks based on flexible interconnection,analyzes the basic concept of flexible interconnection in distribution networks and the key technologies applied in flexible interconnection in distribution networks,and analyzes typical application scenarios of flexible interconnection in distribution networks.By analyze the key role and significance of flexible interconnection in improving the voltage quality of distribution networks,in order to raise the attention of relevant departments to the application of this technology in building new power systems.