A disassembly procedure generating apparatus is configured to include: an assembly procedure editing unit that incorporates a new work element into an assembly procedure; an assembly procedure change monitoring unit that performs monitoring as to whether a new work element has been inserted into the assembly procedure; a disassembly procedure generating unit that generates, when a new work element is inserted into the assembly procedure, a disassembly procedure by using work elements of the assembly procedure into which the new work element has been inserted and by using information associating the work elements of the assembly procedure with work elements of the disassembly procedure; a disassembly procedure cost calculating unit that calculates a cost generated for the entirety of the disassembly procedure; and a procedure cost information displaying unit that displays, together with the assembly procedure, the disassembly procedure and the cost generated for the entirety of the disassembly procedure.