Surface Acoustic Wave (SAW) filters based on the acoustoelectric amplification effect have the advantages of high integration and non-reciprocity, and have a wide application prospects in the national defense and commercial fields. At the same time, the research of new materials and structures provides new ideas and directions for the preparation of future highly integrated SAW filter amplifiers. The mechanism of SAW acoustoelectric amplification is introduced in this paper, the commonly used structures of the devices are analyzed, and the performance specifications of some devices are summarized, which have certain reference significance for the application and promotion of SAW filter amplifiers.