The invention provides an OpenStack traffic collection method based on a tunneling protocol. The method specifically includes the following steps: a mirroring proxy and a mirroring management center are set, wherein the mirroring proxy is deployed on a network node or a computing node of OpenStack, and the mirroring management center is deployed on other physical equipment or virtual machines; themirroring management center sends a mirroring command to the mirroring proxy; and after receiving the mirroring command, the mirroring proxy adds a tunnel header to the traffic of a specified sourceport that is copied and sends the tunnel header and the traffic to a corresponding traffic analysis application through a tunnel established with a destination IP. Compared with the prior art, the virtual machines or virtual networks or services to which the aggregated traffic belongs can be conveniently distinguished, and the traffic of a mirroring virtual machine, the traffic of the virtual networks to the outside and the traffic of a virtual router to a public network can be conveniently and freely selected.