Disclosed is a flexible surgical instrument system, comprising a flexible surgical instrument (10). The flexible surgical instrument (10) comprises a flexible continuous body structure composed of a distal structural body (11), a proximal structural body (16) and a middle connecting body (15). The distal structural body (11) comprises distal structural segments (12, 13), the distal structural segments (12, 13) each comprising a distal spacer plate (121, 131), a distal fixed plate (122, 132) and a structural bone (123, 133). The proximal structural body (16) comprises proximal structural segments (17, 18), the proximal structural segments (17, 18) each comprising a proximal spacer plate (171, 181), a proximal fixed plate (172, 182) and a structural bone (173, 183). The middle connecting body (15) comprises a channel fixing plate (152) and a structural bone guiding channel (151). A driving unit fixing plate (21) is provided behind the channel fixing plate (152). A plurality of cable transmission mechanisms (22) for converting a rotary motion input into a linear motion output are provided between the driving unit fixing plate (21) and the channel fixing plate (152). Output ends of the cable transmission mechanisms (22) are connected to one end of a driving bone (211) by means of a linear motion mechanism, and the other end of the driving bone (211) passes through the proximal spacer plates (171, 181), and is then fixedly connected to the proximal fixed plates (172, 182).Linvention concerne un système dinstrument chirurgical flexible, comprenant un instrument chirurgical flexible (10). Linstrument chirurgical flexible (10) comprend une structure de corps continu flexible composée dun corps structural distal (11), dun corps structural proximal (16) et dun corps de liaison intermédiaire (15). Le corps structural distal (11) comprend des segments structuraux distaux (12, 13), les segments structuraux distaux (12, 13) comprenant chacun une plaque despacement distale (121, 1
