The invention discloses an intelligent vehicle terminal access realizing method based on the UDP (User Datagram Protocol). A server receives messages requested by intelligent vehicle terminals, and then acquires message port numbers and IP information through a socket API (Application Program Interface), a client side is created by utilizing the socket API, each intelligent vehicle terminal corresponds to one socket client side, and the socket client sides are used for passing back responsive data messages to the intelligent vehicle terminals; a socket cache mechanism is adopted to process requested high-capacity concurrent data packages, and response to the intelligent vehicle terminals after the server finishes processing according to a message format. The design of a transmission channel based on the UDP and between the intelligent vehicle terminals and the server can greatly save time in an acknowledgement mechanism, a retransmission mechanism, a congestion control mechanism and the like during data transmission; when the number of intelligent vehicle terminals is more, the network transmission efficiency cannot be reduced, packet loss, time delay and other phenomena are avoided, and the operation of the intelligent vehicle terminals can be ensured.