Work machine and work machine management system transmitting information according to priority

A work machine comprising:

• a controller that acquires first operation information of the work machine and receives management server information from a management server provided outside the work machine;
• a long-distance communication device, coupled to the controller, configured to communicate via mobile communication networks;
• and
• a short-distance communication device coupled to the controller,
• wherein:
• the first operation information includes information indicating at least one of a key signal, an overheat signal, an engine hydraulic pressure, an engine actual rotational speed, a water temperature, an air filter pressure difference, or a main hydraulic pump pressure;
• the management server information includes a vehicle body priority level indicating a priority order between the work machine and another work machine, and at least one of a failure probability of the work machine, an importance level of the work machine in an on-site work, or a probability that the work machine can be replaced by another work machine;
• and
• wherein the controller is configured to:
• determine a transmission priority order of the first operation information based on content of the first operation information and the management server information, and
• transmit, via the long-distance communication device or the short-distance communication device, the first operation information to the management server or a relay according to the transmission priority order.