Provided are a know-how information processing system, method and device with which it is possible to utilize advanced know-how which responds to changes in the surrounding environment. This know-how information processing system links action information and event information acquired at the same time or within a prescribed time period, records the same as a life log of a subject (operator), and outputs information in which the life log and environment information are associated with one another (know-how data) or information generated from the associated information (know-how content), as know-how information.