Method for transmitting data on logging data link through transmission protocol

The invention discloses a method for transmitting data on a logging data link through a transmission protocol. The transmission protocol comprises an application layer, a link layer under the application layer and a physical layer under the link layer. The method includes the steps: the link layer receives an application layer message segment forwarded by the application layer, the application layer message segment is divided into multiple subsegments, the subsegments are packaged in effective load of at least one link layer data frame, the link layer data frames are forwarded to the physical layer, and the physical layer transmits the data. The method has the advantage that logging data transmission efficiency and throughput is improved.