Avionic full duplex real-time Ethernet data transmitting device

The utility model discloses an avionic full duplex real-time Ethernet data transmitting device, and relates to the technical field of aviation bus ARINC 664 test. The AFDX data transmitting device disclosed by the utility model comprises a setting unit, a timing circuit and a data processing circuit, wherein the setting unit determines a data timed transmitting period according to user operations, and sets the determined data timed transmitting period as a timing period of the timing circuit; the timing circuit detects whether the timing period set by the setting unit is reached or not, and starts the data processing circuit when the timing period is reached; and the data processing circuit transmits messages predefined by users. The technical solution disclosed by the utility model meets requirements of the users in the test process, that is, particular test operations are carried out according to particular triggering conditions set by the users, thereby enriching the test environment, and further improving