The invention discloses a charged detecting circuit for a forcible locking device. The charged detecting circuit is connected with a three-phase high-voltage sensor. The charged detecting circuit comprises a charged display circuit and a timing electrifying circuit, wherein the charged display circuit and the timing electrifying circuit are interconnected; and the charged displaying circuit is used for receiving a sensor signal, displaying the charged condition, and outputting a high-low level signal to the timing electrifying circuit. With the adoption of the charged detecting circuit for the forcible locking device provided by the invention, the high-voltage charged condition can be detected and displayed; and the forcible locking device can be driven to be unlocked after determining that no high-voltage charged circumstance occurs, and the safety is improved.