An operational parameter setting supporting system for setting an operational parameter that specifies an operation of a component mounting apparatus is configured to include in an input unit into which a setting value of a component parameter and a setting value of the operational parameter that corresponds to the component parameter are input, a storage in which a correlation table in which the component parameter and the operational parameter that corresponds to the component parameter are associated with other is stored, and a rule table creation processor that creates a rule table from the setting value of the component parameter and the setting value of the operational parameter that are input into the input unit, and from the correlation table that is stored in the storage.