Surgical robotic arm and surgical robot

(canceled)

(canceled)

(canceled)

A surgical robot, comprising a surgical robotic arm, wherein the surgical robotic arm comprises a presurgical positioning assembly, a telecentric manipulating assembly and an executing assembly, wherein the telecentric manipulating assembly comprises a static platform, a first movable platform and a plurality of first telescopic elements disposed between the static platform and the first movable platform, a side of the static platform relatively far away from the first movable platform is connected to the presurgical positioning assembly, a side of the first movable platform relatively far away from the static platform is connected to the executing assembly, and both ends of each first telescopic element are rotationally connected to the static platform and the first movable platform respectively;

• the executing assembly has a preset telecentric fixed point, coordinated extension and retraction of the plurality of first telescopic elements is capable of controlling the first movable platform to move relative to the static platform and drive the executing assembly to extend and retract and swing, a swing center of the executing assembly is the telecentric fixed point, and a telescopic path of the executing assembly passes through the telecentric fixed point.