The invention relates to a method for confirming a flight-parameter recording parameter set of an airplane. The method comprises five steps of confirming the correspondence of an airplane system and a standard first-level parameter, confirming a system operation parameter, confirming a system functional parameter, merging parameters and analyzing and calculating. According to the method, the to-be-collected parameter set is procedurally set according to the flight parameter function positioning, so that the difficulties of the traditional few parameter setting basis and shortage of strong operability standard flow are overcome; the parameter sets required by accident treatment, equipment monitoring and flight training are confirmed; specifically, the components and functions of the airplane and important system thereof that are related to the flight parameters can be systemically carded; basic technical support is supplied to accident investigation or other applications; the work is synchronously completed with the top layer design of the airplane; FMEA and FTA can be combined for reliably and safely analyzing the work and confirming the parameter composition; the required lowest sampling rate can be quantitatively calculated according to the flow.