As the design of products is becoming more complex, and the time it takes for these products to go on the market becomes shorter, the concurrent design technique is widely used. This paper proposes a distributed framework-YC-bridge, which supports the concurrent design of multi-domain complex products. Based on Client/Server middleware, the framework realizes design datamanagement based on design body model, tool encapsulation based on sementic model, design process management based on the extended net graph model. YC-bridge has been applied successfully in practical design work.