The invention relates to a merging unit point-to-point SV message receiving-sending method. The method comprises the following steps: packaging SV messages with the high operational capability of a CPU (Central Processing Unit); periodically inquiring whether or not messages exist in an FPGA (Field Programmable Gate Array) sending buffer area; if the messages exist, resolving message sending time, calculating message sending waiting time according to the message sending time and time needed for sending a frame of message, and sending the messages out after waiting for a period of time, wherein the waiting time is short; otherwise, inquiring whether or not messages exist in a DM9000C receiving buffer area; and if the messages exist, marking received messages with time stamps through a high-accuracy timer of an FPGA to realize an SV message point-to-point receiving function. Through adoption of the method, the uniformity and reliability of SV message reception and sending are enhanced greatly.