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Two problems in the pitch axis equivalent matching of the transporter were researched and solved in this paper. One problem is the result of high frequency range was bad in frequency response identification due to the long time of the pitch axis input. To solve these problems, domain identification method and contrastive analysis were proposed. The results of the flight test data show that, time domain identification method had better matching result than frequency domain identification method for long time input. A contrastive analysis of one parameter matching and two parameters matching result was made and the two parameters matching method was chosen.Identification method and analysis approach proposed here were effective and can be adopted to the quality assessment of other aircraft.