Production system and assembly method thereof

The invention provides a production system and an assembling method thereof. The setting time of the production system can be shortened. To this end, the production system is provided with: a base unit width determination unit (51) that determines a base unit width, which is a common width of a plurality of base units on which a plurality of control devices and a plurality of controlled devices are mounted; a production control unit (52) that performs an operation test of the device to be controlled in the first region; a disassembly condition determination unit (53) that determines disassembly conditions of the production system in units of modules such that any one of the control devices and the corresponding one of the controlled devices are included in the same module and the size and weight of each of the modules do not exceed the allowable size and allowable loading weight of the transport device; and a transport plan setting unit (54) that determines the order in which the plurality of modules are tran