Based on the introduction of the digital reverberation algorithm, we use the integrated impulse response method, and the method of compressing and extending the reverberation model impulse response to solve two existing problems of the Dattorro's plate reverberator in the practical application. The two problems are: first, according to the known reverberation time how to get the appropriate feedback coefficient. Second, the range of the reverberation time is narrow. Finally, we verify the effectiveness of the algorithm by experiments.