Aimed at the problems that it remains to solve the practical problems in the field maintenance at a certain type of digital electronic engine controller, a comprehensive measurement and control system is designed on the basis of fully studying in the signal characteristics of the DEEC and conducting extensive investigation on the actual needs of the frontline maintenance personnel. The measurement and control system output and acquisition accuracy are ensured to realize the miniaturization, modularization and automation of the system by adopting full digital design, the modifying signal processing circuits of DDS technology, the virtual instrument technology and other means. The test shows that the system is simple and convenient in operation, excellent in loading ability, and high in precision, realizing to take the place of the original measurement and control system. In fact, the measurement precision of the voltage and time can be up to ±0.01 V and ±10 ms, the accuracy of the sensor signal simulation can be also up to ±0.2 Hz, ±0.01 V and ±0.01 Ω. Moreover, the system can also become a good hardware platform for studying the intelligent testing technology.