An information management device of a work machine includes an information collection unit that collects vehicle information of the work machine, an information analysis unit that analyzes the vehicle information to generate analysis information, a selection definition storage unit that stores a selection definition that defines transmission propriety information indicating whether it is allowed to transmit the vehicle information and the analysis information to a general-purpose processing function unit, and an information selection unit that selects, based on the selection definition, information to be transmitted to the general-purpose processing function unit.