Component mounting line changeover support system and changeover support method

A component mounting line changeover support system for a component mounting line that mounts components on a circuit board using multiple component mounters lined up along a conveyance path of a circuit board, the component mounting line changeover support system comprising:

• a batch exchange unit set on each of the multiple component mounters, the batch exchange unit being configured for batch exchanging multiple feeders that supply components or multiple suction nozzles that pick up the components and mount the components on the circuit board;
• multiple exchange-use batch exchange units to be exchanged with the batch exchange units set on the component mounters;
• a memorizing device configured to memorize setup information that is information of feeders or suction nozzles loaded on each of the multiple exchange-use batch exchange units;
• and
• a changeover determining device configured to decide and notify to an operator a combination of batch exchange units that include all of the feeders or suction nozzles to be used in a post-changeover production from among the multiple exchange-use batch exchange units, based on the setup information memorized on the memorizing device that is information of the feeders or suction nozzles loaded on the batch exchange units used in a pre-changeover production.