The cabin acoustic environment is one of the principle considerations for the aircraft passengers, and acoustic quality is an important feature of the acoustic environment. At present, there are two ways of acoustic quality analysis: subjective evaluation and objective evaluation. The objective evaluation of acoustic quality can reflect the sound characteristics more objectively by analyzing the physical parameters such as the spectrum characteristics of noise data.In this paper, the acoustic environment data of domestic mainstream aircraft in cruise stage were measured by the highprecision dual ear acquisition equipment, and the acoustic quality of the relevant data was analyzed objectively. According to the analysis of the measurement results in this paper, the Alevel in the aircraft cabin was between 69.4 dB (A) and 83.9 dB (A) and loudness was between 28.4 sone and 52.5 sone.The sharpness distribution was relatively uniform, and the value was between 1.1 acum and 1.4 acum. According to the results of the spectrum cloud chart, the noise sources were mainly concentrated in the frequency band of 200 Hz and 400 Hz, and the noise intensity was significantly enhanced in the middle and rear of the cabin. In general, the performance of cabin acoustic quality of each sampling model in the cabin is at an acceptable level, and the acoustic quality of the front cabin is better than that of the middle and rear of the cabin.