The embodiment of the invention discloses a wireless voice quality evaluation method and device. The method comprises steps: the packet length, the IP type, the first switching frequency and the second switching frequency of a voice data packet in a wireless communication network are acquired; according to the packet length and the IP type, corresponding voice level coefficients are obtained by table looking-up; according to the first switching frequency, the second switching frequency and the voice level coefficients, evaluation coefficients are calculated and obtained; and according to the evaluation coefficients and a preset expression, a voice quality evaluation value is calculated and obtained. In the embodiment of the invention, through comprehensive judgment on the packet length andthe IP type of the voice data packet to obtain the corresponding voice level coefficients and through counting the switching frequency of a base station to comprehensively obtain the real-time voicequality, no tedious test process and no complex test device is needed, and through controlling different voice data packets, the real-time voice quality of a single time and the voice quality of the whole area can be acquired conveniently.