In-chip connection management-based RDMA communication method

The invention discloses an in-chip connection management-based RDMA (Remote Direct Memory Access) communication method, which comprises the following implementation steps: (1), building a context data transmitting structure and a context data receiving structure in a network interface card, building a descriptor queue, a short message receiving queue and a completion event queue in a host internal memory; (2), submitting RDMA written descriptor to the descriptor queue in the host internal memory by a source node host, and obtaining the descriptor to be processed by a source node network card; (3), checking that the current required descriptor is RDMA written descriptor by the source node network card, and building connection between the source node and an objective node network card chip; and (4), based on the connection, obtaining data from a local machine by the source node in a DMA manner, and then sending to the objective node network card. The method has the advantages of good extensibility, multi-channel transmission supporting, reliable data transmission, high multinuclear treatment efficiency, and low single-message message transmission delay.