The sound absorption performance of flexible microperforated panel absorber (MPPA) at high frequency range from 1 500~6 500 Hz is investigated experimentally in this paper. Since the polyvinyl chloride (PVC) materials have many advantages such as good flexibility, low viscosity, easytopiercing, low cost, and so on, the PVC is used as the perforated material. The impedance tube is used to test the sound absorption performance of the PVCMPPA with perforation rate of 2.181%、3.407%、5.436%、7.666% respectively, and then compared with Maa′s model. The experimental results show that the absorption peaks due to the panel vibration effect have a low frequency offset. The sound absorption performance of flexible MPPA is improved significantly at lowfrequency range while keeping almost the same at highfrequency range, therefore the frequency band width of sound absorption is widened, and the absorption coefficient increases of about 33.9% at 1 500 Hz.