Disclosed is a flexible surgical instrument system, comprising a flexible surgical instrument (10) and a driving unit (20), wherein 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 a distal segment (12, 13), the distal segment (12, 13) comprising a distal spacing disk (121, 131), a distal fixation disk (122, 132) and structural backbones (123, 133)； the proximal structural body (16) comprises a proximal segment (17, 18), the proximal segment (17, 18) comprising a proximal spacing disk (171, 181), a proximal fixation disk (172, 182) and structural backbones (173, 183)； the middle connecting body (15) comprises channel fixing plates (152) and a structural backbone guide channel (151)； and the driving unit (20) comprises a driving unit fixing plate (21), a plurality of linear motion mechanisms (22) are provided between the driving unit fixing plate (21) and the channel fixing plate (152) near the proximal structural body (16), an output end of each of the linear motion mechanisms (22) is securely connected to a first driving backbone (211), one end of the first driving backbone (211) is securely connected to one end of a second driving backbone (212) via an adapter unit (23), and both the other end of the first driving backbone (211) and the other end of the second driving backbone (212) pass through the proximal spacing disk (171, 181) and are then securely connected to the proximal fixation disk (172, 182).
