Maintenance history information management system for construction machine

The present invention provides a maintenance history information management system for a construction machine that is capable of enhancing the reliability of temporal information about maintenance history data. A data recording device is incorporated in a hydraulic excavator or other construction machine to process operating time or date and time. A mobile terminal includes a CPU for displaying construction machine maintenance items on a monitor . A worker can input data for the maintenance items as the maintenance history data. The mobile terminal inputs the operating time or date and time from the data recording device via a communication cable and a communication connector and stores the input operating time or date and time in a storage device in association with the maintenance history data.