An operation support method for supporting an operation of an electrolytic apparatus, the operation support method comprising: acquiring, by an instrument information acquisition unit, from an instrument included in the electrolytic apparatus, instrument information including measurement data which is measurement data by the instrument and is obtained by measuring a parameter regarding the electrolytic apparatus; acquiring, by a switching portion information acquisition unit, switching portion information indicating information regarding one or more switching portions which are included in the electrolytic apparatus and configured to control at least one of a flow rate of a fluid (70, 71, 72, 73, 74, 75, 76) or a pressure of gas (77, 79); acquiring, by an electrolytic apparatus state acquisition unit, electrolytic apparatus state information indicating a state of the electrolytic apparatus on a basis of at least one of the instrument information or the switching portion information; acquiring, by a determination result acquisition unit, when the electrolytic apparatus state information is in a predetermined second condition, a determination result that it is determined that the state of the electrolytic apparatus is a second state, the second state being a state in which a control unit automatically controls the switching portion; and displaying, by the control unit, the electrolytic apparatus state information acquired in the acquiring of the electrolytic apparatus state and the determination result acquired in the acquiring of the determination result, wherein the acquiring of the determination result is a step in which the determination result acquisition unit acquires a determination result obtained by determining that the state of the electrolytic apparatus is a first state where the control unit is to prompt a work by an operator when the electrolytic apparatus state information is in a predetermined first condition different from the second condition or a determination result obtained by determining that the state of the electrolytic apparatus is the second state when the electrolytic apparatus state information is in the second condition, wherein the second condition satisfies a predetermined standard (Std). acquiring, by an instrument information acquisition unit, from an instrument included in the electrolytic apparatus, instrument information including measurement data which is measurement data by the instrument and is obtained by measuring a parameter regarding the electrolytic apparatus; acquiring, by a switching portion information acquisition unit, switching portion information indicating information regarding one or more switching portions which are included in the electrolytic apparatus and configured to control at least one of a flow rate of a fluid (70, 71, 72, 73, 74, 75, 76) or a pressure of gas (77, 79); acquiring, by an electrolytic apparatus state acquisition unit, electrolytic apparatus state information indicating a state of the electrolytic apparatus on a basis of at least one of the instrument information or the switching portion information; acquiring, by a determination result acquisition unit, when the electrolytic apparatus state information is in a predetermined second condition, a determination result that it is determined that the state of the electrolytic apparatus is a second state, the second state being a state in which a control unit automatically controls the switching portion; and displaying, by the control unit, the electrolytic apparatus state information acquired in the acquiring of the electrolytic apparatus state and the determination result acquired in the acquiring of the determination result, wherein the acquiring of the determination result is a step in which the determination result acquisition unit acquires a determination result obtained by determining that the state of the electrolytic apparatus is a first state where the control unit is to prompt a work by an operator when the electrolytic apparatus state information is in a predetermined first condition different from the second condition or a determination result obtained by determining that the state of the electrolytic apparatus is the second state when the electrolytic apparatus state information is in the second condition, wherein the second condition satisfies a predetermined standard (Std).