As a cost-effective and broadband access network, Ethernet Passive Optical Network (EPON) has been attracting more and more attentions. Meanwhile, VLAN is being widely used in network configuration to meet the QoS and network management. Currently, with the growing of the network scale, basic VLAN service can not satisfy the requirements of most large-scale network deployment any more. So it is very important to provide enhanced VLAN service over EPON. In this paper, we propose a novel EPON system which can provide the automatic VLAN translation service. By comparing with the traditional way, it can be shown that the proposed system is much more economical and efficient to support the stacked VLAN function and VLAN translation function.