Abstract: This article researched and designed the calculation method of loading and unloading integrity rate based on the departure vehicle of the day to solve the problem that the current calculation method based on the 18:00 report cannot accurately locate and the report is incomplete. Using the method of simulating the operation of station system, taking the arrival and departure report as well as loading and unloading report of railway transportation information integration platform as the main data source, it was generated a vehicle registration form including basic vehicle information and operation information, and then calculated the loading and unloading integrity rate of the station based on the form. Through the loading and unloading integrity rate calculated by this method, the managers or operators can quickly find the loading and unloading operations without uploading the loading and unloading report, so that they can accurately and quickly locate the problem vehicles.