Peripheral component interconnect express data transmission control system

A peripheral component interconnect express data transmission control system is provided. Peripheral component interconnect express data equipment is divided into a first partition and a second partition, the first partition comprises first non-transparent bridging equipment, uplink port equipment and downlink port equipment, and the second partition comprises second non-transparent bridging equipment. Thread node data of a central processing unit is transmitted to a first non-transparent bridging device, the first non-transparent bridging device transmits the thread node data to a second non-transparent bridging device through an internal line, and the second non-transparent bridging device transmits the thread node data to a downlink port device through an entity peripheral component interconnect express line. The downlink port device transmits the thread node data to the uplink port device through the internal circuit, and the uplink port device transmits the thread node data to the storage address of the