In order to realize ultra-high speed acousto-optic modulation, a method of designing and simulating the bonding membrane system of a fiber optic coupling acousto-optic modulator is presented in this paper. An optical fiber coupled acousto-optic modulator with a working frequency of 200 MHz and a rise time of 10 ns was designed and manufactured by this method。The device uses TeO2 as the acousto-optic medium, 36 ° Y-cut LiNbO3 as the piezoelectric transducer wafer, the substrate layer uses high-purity Cr, the bonding layer is high-purity Au, and the results show that the device performance test is good.