The invention discloses a method and system for concurrent use of a VLAN and a VXLAN for communication in a cloud environment. The method comprises the following steps: when the type of a network connected with a virtual machine network card is the VLAN, a distributed business network virtual switch packages a VLAN message with a VLAN label and forwards the packaged VLAN message to a business network physical switch; and when the type of the network connected with the virtual machine network card is the VXLAN, the distributed business network virtual switch carries out OVS flow control and guides a VXLAN message to a distributed VXLAN processing switch, and the distributed VXLAN processing switch processes the VXLAN message and then decides to forward the processed VXLAN message to the business network physical switch or another local virtual machine. The method and system provided by the invention has the advantages that when virtual networks isolated through the VLAN are not required, a user can use VXLAN packaging to ensure that a virtual machine of the user is isolated from virtual machines of other users, so that limitations on VLAN numbers of a data center are reduced.