The invention discloses a collection and analysis system and a collection and analysis method for multiple VPN traffics, in order to solve the problem that the types of the VPN traffics become more and the magnitude increases rapidly, and the problem how to screen different VPN traffics. A VPN user concept is introduced into the invention, each device can have multiple VPN users, each user can mapmultiple MPLSs, VlANs and Frame relays in a one-to-many manner, so that difference of VPNs can be effectively shielded, and compared with many-to-many mapping, the space complexity can be effectivelyreduced. A six-tuple rule (VPN user, source IP, destination IP, source port, destination port, protocol type) is used, so that the VPNs and five-tuple fields can be matched at the same time, the target VPN traffic can be accurately identified, and the accuracy of traffic collection and analysis can be significantly improved.