The invention relates to a linear drive robot with curvature capable of being continuously changed. The robot comprises a PC, a control drive unit and a whole mechanical structure assembly. The PC is connected with and communicates with the control drive unit through parallel port lines. The control drive unit is installed on the whole mechanical structure assembly and is correspondingly connected with motor set units in the whole mechanical structure assembly. The PC and the control drive unit control the motor set units in the whole mechanical structure assembly respectively. Motors in the motor set units rotate to change the length of pull wires corresponding to the motors, so that a linear drive flexible unit in the whole mechanical structure assembly moves. Compared with a traditional mechanical arm device, the number of degrees of freedom of the robot is large, the robot can be freely bent in movement space, no dead corners exist, and use and scientific research value is high.