A recovery method management method includes executing and completing a work on a work target of a system according to a work start command and a work completion command, creating working method information for each work target, acquiring before-work-start system information and after-work-completion system information of the system to create before-and-after-work change information for each work target, storing and managing the working method information and the before-and-after-work change information in a work information managing and storing unit for each work target, creating recovery method information for each similar recovery work target among the work targets on the basis of the working method information, creating before-and-after-recovery change information for each recovery work target on the basis of the before-and-after-work change information, and storing and managing the recovery method information created and the before-and-after-recovery change information created in a recovery method managing and storing unit for each recovery work target.