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Airborne survey data collection is a long time, high efficiency data acquisition process, you need to complete the airborne task unit multi-channel data continuous acquisition, traditional airborne measuring power data acquisition system is the need for many times and again on the electrical work, under the condition of not lost electricity saved data, once airborne task unit channel suddenly loses power, lead to a large number of missing, under the condition of electricity data cannot complete airborne measuring the accuracy of the data acquisition. Design a based on QNX SDP of airborne survey data collection system, analyses the system hardware antijamming design of digital circuit and analog circuit, system software consists of initialization module, data acquisition module and QNX SDP system clock timer modules, three modules by QNX SDP process manager based on priority and reasonable regulation and analyzed based on QNX SDP PWU man-machine interface module composition and main task, realize the user and the system of airborne survey data interaction in real time. Experimental results indicate that the designed system can realize the effective ARINC429 onboard measurement data acquisition, and ARINC429 data waveform graph is given, the system has lower cost, higher collection efficiency and precision of the application of airborne survey data real time acquisition has good versatility and expansibility. 