A specimen processing system comprising: a plurality of processing units (2-1 to 2-5) each including a transporting line (R2-R6) and a plurality of mechanisms (M4-M18), wherein the transporting lines (R2-R6) constitute a transporting system across the entire specimen processing system as an end portion of each transporting line (R2-R6) is connected to the transporting line (R2-R6) of the adjacent specimen units (2-1 to 2-5), and each mechanism (M4-M18) has one function and is adapted to process a specimen; a power supply which is adapted to supply electricity to the plurality of mechanisms (M4-M18) and transporting lines (R2-R6) that constitute the specimen processing units (2-1 to 2-5); a circuit (102a-c) which is provided in the each mechanism (M4-M18) and transporting line (R2-R6), and is adapted to supply the electricity from the power supply; indicating means for indicating to stop the supply of the electricity to an arbitrary mechanism among the mechanisms (M4-M18) or an arbitrary transporting line among the transporting lines (R2-R6); a power switching portion which is adapted to physically open and close the circuit (102a-c) that supplies the electricity to the arbitrary mechanism (M4-M18) or transporting line (R2-R6) to switch the supply and the stop of the electricity with respect to the arbitrary mechanism (M4-M18) or transporting line (R2-R6) indicated by the indicating means; and a display device that is adapted to display the indicating means on a mechanism part selection screen as a plurality of first buttons (B4-B18), wherein said first buttons (B4-B18) allow to select the arbitrary mechanism (M4-M18) for which the supply and the stop of the electricity is to be switched by said power switching portion, and as a plurality of second buttons (B23-B27), wherein said second buttons (B23-B27) allow to select the arbitrary transporting line (R2-R6) for which the supply and the stop of the electricity is to be switched by said power switching portion. a plurality of processing units (2-1 to 2-5) each including a transporting line (R2-R6) and a plurality of mechanisms (M4-M18), wherein the transporting lines (R2-R6) constitute a transporting system across the entire specimen processing system as an end portion of each transporting line (R2-R6) is connected to the transporting line (R2-R6) of the adjacent specimen units (2-1 to 2-5), and each mechanism (M4-M18) has one function and is adapted to process a specimen; a power supply which is adapted to supply electricity to the plurality of mechanisms (M4-M18) and transporting lines (R2-R6) that constitute the specimen processing units (2-1 to 2-5); a circuit (102a-c) which is provided in the each mechanism (M4-M18) and transporting line (R2-R6), and is adapted to supply the electricity from the power supply; indicating means for indicating to stop the supply of the electricity to an arbitrary mechanism among the mechanisms (M4-M18) or an arbitrary transporting line among the transporting lines (R2-R6); a power switching portion which is adapted to physically open and close the circuit (102a-c) that supplies the electricity to the arbitrary mechanism (M4-M18) or transporting line (R2-R6) to switch the supply and the stop of the electricity with respect to the arbitrary mechanism (M4-M18) or transporting line (R2-R6) indicated by the indicating means; and a display device that is adapted to display the indicating means on a mechanism part selection screen as a plurality of first buttons (B4-B18), wherein said first buttons (B4-B18) allow to select the arbitrary mechanism (M4-M18) for which the supply and the stop of the electricity is to be switched by said power switching portion, and as a plurality of second buttons (B23-B27), wherein said second buttons (B23-B27) allow to select the arbitrary transporting line (R2-R6) for which the supply and the stop of the electricity is to be switched by said power switching portion.