Abstract: The techniques and characteristics of MPLS VPN were introduced. Some of problems of an electronic governmental opening network built on the public network was analyzed based on MPLS VPN. A construction scheme of electronic governmental opening network was presented on MPLS VPN techniques. We accomplished one of Sichuan province's electronic governmental opening network on the public network, which can connect all the local governmental networks as a whole network with safety information transmission effectively as well as a good social beneficial result.It is shown that electronic governmental opening network construction techniques based on MPLS VPN is of merits of easy and smooth use and flexible practice as well as wide application and so on.

Key words: Electronic governmental network, Main construction design, Network equipment