The invention discloses a reactor control rod motion control device. The reactor control rod motion control device comprises a controller, a construction machine, a remote interface and a power module, wherein the controller is used for generating a control rod control signal, obtaining a state signal of a reactor control rod control system, judging whether the state signal and the control rod control signal are in failure or not, generating a failure alarm signal when the state signal and the control rod control signal are in failure and generating a corresponding control rod control signal according to the failure alarm signal; the construction machine is connected with the controller and is used for receiving an external operating order and displaying the state signal and the failure alarm signal; the controller is also used for correspondingly correcting control parameters according to the operating order; the remote interface is used for realizing data interaction between the controller and the reactor control rod control system; the power module is used for supplying power to the controller, the construction machine and the remote interface. According to the reactor control rod motion control device disclosed by the invention, the reactor control rod motion control system can be comprehensively monitored, the failure can be automatically analyzed, and the failure can be processed when failure alarm is carried out.