Abstract: In response to the problem that enterprises find it difficult to obtain timely liquidation results under the current "monthly liquidation" system for railway freight transportation, this paper combined the concept of "pre-liquidation" to design a railway freight undertake transportation pre-liquidation service system. Based on data from the railway freight ticket system and historical liquidation data, the paper constructed a freight carrier pre-liquidation architecture under the new railway transportation revenue liquidation system based on data from the railway freight ticket system and historical liquidation data, achieved functions such as raw data parsing, revenue and expense estimation, and pre-liquidation reports. The paper randomly selected freight undertake transport data from 10 railway group companies for verification. The verification results show that the absolute value of the error between the predicted value and the actual value is less than 0.1, which can effectively help enterprises obtain similar settlement result data in advance and provide reference for enterprise fund prepayment and liquidation.