The invention discloses a CAE file conversion method and device based on a general reading-writing framework. The conversion method comprises: S1, reading the file content in the model file A according to the row order; S2, mapping the file content of each row in line with the format analysis of the model file A according to the pre-configured reading configuration file in the general reading-writing framework; S3, according to the pre-configured writing configuration file in the general read-write framework, mapping the unified data model to the model file B in the format of the model file B. The general reading-writing framework and the intermediate bridge unified data model are introduced in the invention, the reading configuration file and the writing configuration file are written in the general reading-writing framework, and the unified data model is combined to convert the model file A generated in the CAE data processing process into the model file B of different formats, to realize mutual conversion of model files of different formats.