34 associated with the sewing machine 1 for the first sewing process will operate the sewing machine 1 in response to the sewing machine actuation signal so that the machine can perform sewing in accordance with the allotment data subsequent to the step s21 the system control device 31 operates the transferring robot 11 12 and their hands 15 in order to transfer the jig 4 for the second sewing process from the jig station 5 6 to the working table 7 9 in step s22 thereafter in step s23 the system control device 31 is ready for receiving a sewing completion signal from the sewing machine controlling device 34 associated with the sewing machine 1 for the first sewing process after inputting the signal the jig 4 for the first sewing process is removed from the sewing machine 1 for the first sewing process and is transferred to the working table 7 9 by the transferring robot 11 12 s24 then when the fabric setting siganl is inputted upon manipulation of the fabric setting switch 37 on the working table 7 9 after the fabric c is disassembled from the jig 4 used for the first sewing process and is assembled to the jig 4 used for the second sewing process by the operator decision made in the step s25 is yes then the system control device 31 moves the jig 4 usable for the second sewing process to the sewing machine 1 usable for the second sewing process in the next step s26 and the jig 4 for the second sewing operation is connected to the sewing machine for the second sewing process by means of the transferring robot 11 12 in this instance a load completion.