A management system comprising: an analyzing device for clinical examination requiring a plurality of maintenance items; a storage unit that stores the plurality of maintenance items including maintenance item reaction parts washing and maintenance item reaction cell replacement, divided procedure elements for each maintenance item, recommended intervals for performing the maintenance for each maintenance item, and an order of the divided procedure elements for each maintenance item; a control unit configured to extract maintenance items to be performed on the basis of the intervals of performance of the maintenance stored in the storage unit upon reception of an instruction to perform the maintenance at a time point when the instruction is issued; wherein the control unit is further configured to sort the order of the divided procedure elements of the maintenance items extracted by the control unit in the order of performance of the maintenance on the basis of one or more predetermined rules; wherein the management system further comprises a display unit and the control unit is further configured to cause the order of the divided procedure elements of the maintenance items to be displayed on the display unit in the order sorted by the control unit; wherein the one or more predetermined rules include the predetermined rule that if there are the same divided procedure elements in the maintenance items extracted by the control unit, the divided procedure elements of the extracted maintenance items are sorted so that the same common divided procedure elements are put into one; wherein the maintenance item reaction parts washing includes the divided procedure elements reaction parts washing and perform cell blank measurement; wherein the maintenance item reaction cell replacement includes the divided procedure elements remove cell cover, remove reaction cell, mount reaction cell, mount cell cover, reaction parts washing and perform cell blank measurement; and wherein, in the case where reaction parts washing and reaction cell replacement are extracted as the maintenance items, the divided procedure elements remove cell cover, remove reaction cell, mount reaction cell, mount cell cover, reaction parts washing and perform cell blank measurement are sorted with the result that the same common divided procedure elements reaction parts washing are put into one and the same common divided procedure elements perform cell blank measurement are put into one. an analyzing device for clinical examination requiring a plurality of maintenance items; a storage unit that stores the plurality of maintenance items including maintenance item reaction parts washing and maintenance item reaction cell replacement, divided procedure elements for each maintenance item, recommended intervals for performing the maintenance for each maintenance item, and an order of the divided procedure elements for each maintenance item; a control unit configured to extract maintenance items to be performed on the basis of the intervals of performance of the maintenance stored in the storage unit upon reception of an instruction to perform the maintenance at a time point when the instruction is issued; wherein the control unit is further configured to sort the order of the divided procedure elements of the maintenance items extracted by the control unit in the order of performance of the maintenance on the basis of one or more predetermined rules; wherein the management system further comprises a display unit and the control unit is further configured to cause the order of the divided procedure elements of the maintenance items to be displayed on the display unit in the order sorted by the control unit; wherein the one or more predetermined rules include the predetermined rule that if there are the same divided procedure elements in the maintenance items extracted by the control unit, the divided procedure elements of the extracted maintenance items are sorted so that the same common divided procedure elements are put into one; wherein the maintenance item reaction parts washing includes the divided procedure elements reaction parts washing and perform cell blank measurement; wherein the maintenance item reaction cell replacement includes the divided procedure elements remove cell cover, remove reaction cell, mount reaction cell, mount cell cover, reaction parts washing and perform cell blank measurement; and wherein, in the case where reaction parts washing and reaction cell replacement are extracted as the maintenance items, the divided procedure elements remove cell cover, remove reaction cell, mount reaction cell, mount cell cover, reaction parts washing and perform cell blank measurement are sorted with the result that the same common divided procedure elements reaction parts washing are put into one and the same common divided procedure elements perform cell blank measurement are put into one.