Combining the development of the test system for the testing platform of some modelhigh thrust-weight ratio turbofan engine, the technique index, data acquisition technique, displaytechnique and simulation principle of test run of the test system are described. In order to increase theprecision of measurement and enhance the use performance of this system, the method of nonlinearcorrection of parameter measured, multiple mode display, real-tirne engine parameter calculation andanlysis etc. are suggested and applied.