The invention discloses a distributed server system, which comprises a wide area network module, a server module and a PCIe network.The PCIe network is connected with WAN module. The server module comprises a plurality of servers. The server comprises a PCIe device and a processing module. The processing module is connected with the PCIe device, and the PCIe network is connected with the PCIe device. A PCIe device includes a storage medium connected to a PCIe network; at the same time, the storage medium in the server is also connected through the PCIe network, so the PCIe network also constitutes the storage network. The invention has the advantages of: PCIe switches and PCIe networks replace traditional LANs and storage area networks. The network of high performance distributed server architecture is simplified from three kinds of network to two kinds of network, which makes the high performance distributed server system simpler, easier to monitor, manage, maintain and expand, and the cost is greatly reduced.