The invention relates to a parameter-based fuzzy test method for an
avionics interface data communication protocol, which solves the robustness test problem of the
avionics interface data communication protocol. The method comprises a main process, a sending process and a monitoring process, wherein the main process comprises the steps of 1, judging whether a user structure tree has special requirements or not, if not, entering the step 2, and if so, entering the step 3; 2, calling a default structure tree, and entering the step 4; 3, forming a new structure tree, calling the newly generated structure tree, and entering the step 4; 4, calling a protocol parameter variation
algorithm, and assigning values to parameters in the to-be-used structure tree; 5, initializing the shared data; 6, assigning values to the shared data according to the running state; 7, starting the sending process and the monitoring process; 8, waiting for notification parameters from the sending process and the monitoring process; and 9, if the notification parameters are received, returning to the step 6, and if not, returning to the step 8.