Operation information control device and system for a construction machine

A data recording unit for managing operating situations of a hydraulic excavator comprises a RAM for taking in and storing plural kinds of operational information regarding the hydraulic excavator as operational data, and a CPU for extracting top priority operational data from among the plural kinds of operational data stored in the RAM , and transmitting the extracted data to the supervising side via satellite communication. Top priority data among the plural kinds of operational data of the hydraulic excavator, which may bring the hydraulic excavator into rest, can be presented to a supervisor of the hydraulic excavator, etc.