Abstract: In order to improve the efficiency of railway freight audit work, this paper focused on the text data of railway freight competitive pricing strategy and designed a RoBERTa (Robustly optimized Bidirectional En­coder Representation from Transformers) -BiLSTM (Bidrectional Long Short Term Memory) -CRF (Conditional Random Field) model based on data augmentation, introduced the data annotation strategy and elaborated on the overall architecture of the model and the sample data enhancement method, conducted application validation on the designed model. The validation results show that the performance evaluation indicators of named entity recognition in railway freight competitive pricing strategy of the RoBERTa-BiLSTM-CRF model are significantly improved compared to the other two traditional models, which can more accurately identify named entity information in the railway freight competitive pricing strategy and assist railway freight auditors in their audit work.