A mechanic skill managing system includes a first database storing an average operation time for every kind of check/repair, the average operation time being a time required for an average mechanic with an average skill to complete the check/repair, and a second database storing a skill value indicative of skill of a mechanic, both of which are connected to a processor. The processor calculates the skill value of the mechanic based on a difference or a ratio between the average operation time stored in the first database and an actual operation time spent by the mechanic to actually complete the check/repair, and registers the skill value in the second database. Thus, the skill of the mechanic can be grasped accurately and can be applied to various operations.