Railway maintenance support method, and railway maintenance support device

Not be a veteran of the worker, on the basis of the collected data can be grasped the implementation period of the appropriate maintenance work, to provide a railway maintenance support device capable of carrying out maintenance work of appropriate content. A data collection step of collecting data necessary to determine implementation period, and data analysis step of predicting the implementation period of the maintenance work based on the threshold set with the analytical values ​​of the analysis of the data, past maintenance work given an extraction step of extracting maintenance plan extraction conditions, the predicted and decision support step of presenting a maintenance plan which is performed when and extraction, maintenance work and the maintenance work that has been carried out of including the data storage processing step of storing in association with each predetermined work information, analyzes the predetermined work information accumulated by the data accumulation processing step and threshold modification step of modifying the threshold.