Buffer management method used for airborne data network asynchronous data interaction area

The invention relates to a buffer management method used for an airborne data network asynchronous data interaction area. The buffer management method used for the airborne data network asynchronous data interaction area includes the steps of receiving data frames. The steps of receiving the data frames includes the following steps that 1, a FPGA module in a link layer detects whether receive buffer FIFO is empty or not all the time, and if the receive buffer FIFO is not empty, data in the receive buffer FIFO on the ES end are read out and sent to outside receive DPRAM; if the receive buffer FIFO is empty, the receiving of the data frames is abandoned; 2, a transport layer software operating in a CPU polls and visits the outside receive DPRAM in real time to judge whether all DPRAM spaces are empty or not, and if all DPRAM spaces are empty, the CPU reads data in the DPRAM; and if not, the receiving of the data frames is abandoned. According to the buffer management method used for the airborne data network asynchronous data interaction area, the data buffer management is perfect, the data addressing is convenient and fast, and the accessing is high efficient.