The invention provides a hybrid cloud network system, a communication system and a communication method, and relates to the technical field of cloud services, the hybrid cloud network system is applied to a private network, and comprises a virtual forwarding device of the private network deployed on a public cloud and a private network forwarding device deployed in the private network; the privatenetwork communicates with the public cloud through the private network forwarding device and the virtual forwarding device; and the private network communicates with other private networks through the virtual forwarding device. The private network can communicate with the public cloud through the private network forwarding device and the virtual forwarding device; the private network communicateswith other private networks through the virtual forwarding device therefore, intercommunication between the private network and the common cloud is realized, the virtual forwarding device deployed onthe public cloud can be realized through the cloud virtual machine, the economic input cost of deploying the hybrid cloud network system is effectively reduced, the threshold of self-building a hybrid cloud network architecture by an enterprise is greatly reduced, and the universality of the hybrid cloud network is improved.