Disclosed is a flexible surgical instrument system, comprising a flexible surgical instrument (10) and a driving unit (20). The flexible surgical instrument (10) comprises a distal structural body (101), a proximal structural body (102) and a middle connecting body (103). The distal structural body (101) comprises distal structural segments (104, 105), the distal structural segments (104, 105) each comprising a distal spacer plate (106, 109), a distal fixed plate (107, 110) and a structural bone (108, 111). The proximal structural body (102) comprises proximal structural segments (112, 113), the proximal structural segments (112, 113) each comprising a proximal spacer plate (114, 117), a proximal fixed plate (115, 118) and a structural bone (116, 119). The middle connecting body (103) comprises a channel fixing plate (120) and a structural bone guiding channel (121). The driving unit (20) comprises an electric motor part (206), a motion conversion part (207) and a linear motion mechanism (201). The electric motor part (206) comprises a first fixed plate (208) and a first electric motor (209). The motion conversion part (207) comprises a transmission chain (210). The transmission chain (210) converts a rotation output from the first electric motor (209) into a linear motion of output rods (222, 223), and transfers same to an input end of the linear motion mechanism (201) through a sterile barrier (224). An output end of the linear motion mechanism (201) is connected to one end of a driving bone (202), the driving bone (202) passes through the proximal spacer plates (114, 117), and the other end of the driving bone is connected to the proximal fixed plates (115, 118).L'invention concerne un système d'instrument chirurgical flexible, comprenant un instrument chirurgical (10) flexible et une unité (20) d'entraînement. L'instrument chirurgical (10) flexible comprend un corps structural (101) distal, un corps structural (102) proximal et un corps de liaison (103) interméd
