The invention provides a control valve which comprises a control valve body; the control valve body comprises a valve rod, and also comprises a valve opening and closing signal feedback device; the valve opening and closing signal feedback device comprises a travel rod; the tail end of the travel rod is connected with an end part of the valve rod; and a displacement sensor is arranged at the head end of the travel rod. The control valve has the beneficial effects that due to the adoption of the technical scheme, the condition that whether the valve is opened and completely opened is known in time through signal feedback of travel switches, so as to be convenient for workers to judge follow-up work.