The purpose of the present invention is to provide an assistance device that can more easily find optimal machining conditions. This assistance device comprises: a program management unit that associates verification results, which are obtained by verifying machining conditions using a plurality of verification functions, with a machining program and stores the verification results in a verification result storage unit; a determination unit that determines whether the verification results meet a target time value for a workpiece; and an advice unit that, if any of the verification results do not meet the target time value for the workpiece, proposes an adjustment to the machining conditions on the basis of the machining condition-associated information that pertains to the machining conditions for the workpiece, the verification results, and the verification functions.