An acceleration proxy device, the acceleration proxy device including a network module, an application acceleration module, and a strategy routing module, wherein the network module includes at least one bridge, each bridge is associated with an IP address segment, the strategy routing module stores routing tables of the at least one bridge, and a routing table of each bridge includes a gateway corresponding to the bridge; the network module is configured to receive an access request with a source IP address of a user and a local area network identity from a first IP address segment through a first bridge, remove the local area network identity carried in the access request, and forward the access request to the application acceleration module in an application layer after removing the local area network identity, where the network module is a local area network module used in VLAN environment; the application acceleration module is configured to set an IP address of the first bridge as a source IP address of the access request in the application layer and forward the access request whose source address is set to the IP address of the first bridge and including the IP address of the user to the strategy routing module; the strategy routing module is configured to query a target gateway corresponding to the access request whose source address is set to the IP address of the first bridge in its stored routing tables, and to send the access request whose source address is set to the IP address of the first bridge to the target gateway through the network module, such that the access request, whose source address is set to the IP address of the first bridge, is sent to a server through the target gateway, wherein the acceleration proxy device is configured in a trunk link between a switch and a network address translation, NAT, device, wherein the network module is further configured to receive the access request sent by the strategy routing module, and to add the local area network identity to the access request for sending to the target gateway. the network module is configured to receive an access request with a source IP address of a user and a local area network identity from a first IP address segment through a first bridge, remove the local area network identity carried in the access request, and forward the access request to the application acceleration module in an application layer after removing the local area network identity, where the network module is a local area network module used in VLAN environment; the application acceleration module is configured to set an IP address of the first bridge as a source IP address of the access request in the application layer and forward the access request whose source address is set to the IP address of the first bridge and including the IP address of the user to the strategy routing module; the strategy routing module is configured to query a target gateway corresponding to the access request whose source address is set to the IP address of the first bridge in its stored routing tables, and to send the access request whose source address is set to the IP address of the first bridge to the target gateway through the network module, such that the access request, whose source address is set to the IP address of the first bridge, is sent to a server through the target gateway, wherein the acceleration proxy device is configured in a trunk link between a switch and a network address translation, NAT, device, wherein the network module is further configured to receive the access request sent by the strategy routing module, and to add the local area network identity to the access request for sending to the target gateway. <EOS>