A surgical system according to one or more embodiments may include: a plurality of surgical instruments each including a flexible shaft and an end effector； an insertion tube to hold the plurality of flexible shafts and to be inserted into a body of a patient from one end of the insertion tube； and a support device for supporting the plurality of surgical instruments and the insertion tube. The support device includes a plurality of supports respectively supporting the plurality of surgical instruments, a support mechanism supporting the plurality of supports together, and an insertion tube holder holding the insertion tube. The plurality of supports independently and movably support the plurality of surgical instruments, respectively.
