Based on the traditional withdrawal weighted technique, an adaptive withdrawal weighted technique is proposed in this paper. The withdrawal weighting of part fingers of the apodized transducer can be carried out by calculation to determine the starting position of the withdrawal weighting and the withdrawal weighted value. The results show that the developed filter based on the proposed method has frequency of 61.60 MHz , -1 dB relative bandwidth of 3.7%, out-of-band rejection of greater than 45 dB, rectangle factor of 1.4. The comprehensive performance of the device is superior to the traditional one.