The present invention discloses a Multi Protocol Label Switching Virtual Private Network (MPLS VPN) gateway-based network method comprising: set one or more Multi Protocol Label Switching Virtual Private Network (MPLS VPN) gateways between a local Internet Service Provider (ISP) network and a superior Internet Service Provider (ISP) network/other Internet Service Provider (ISP) network, connect the Multi Protocol Label Switching Virtual Private Network (MPLS VPN) gateway with the local Internet Service Provider (ISP) network and the superior Internet Service Provider (ISP) network/other Internet Service Provider (ISP) network and at the same time connect the Multi Protocol Label Switching Virtual Private Network (MPLS VPN) gateway with Custom Edge Router (CE) devices in the subscribers' network according to the network topology, corresponding functions on the Multi Protocol Label Switching Virtual Private Network (MPLS VPN) gateway are put into service to provide Multi Protocol Label Switching Virtual Private Network (MPLS VPN) services; said scheme enables Internet Service Providers (ISP) to provide Multi Protocol Label Switching Virtual Private Network (MPLS VPN) services quickly with low investment and conventional network access capacity without modifying conventional network structure, which enhances competitive power and protect conventional investment. IMAGE
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