A hemostatic clip device, comprising a clamping component and a holder component, wherein the clamping component comprises two symmetrically disposed clamping arms, a pin and a sleeve; a head portion of the sleeve is provided with two symmetrically disposed open slots for the clamping arms to move; the holder component comprises a double-wire supporting arm, a fixing ring and a sleeve holder; each of tail ends of outer side edges of the two symmetrically disposed clamping arms is provided with a recess; wherein a hole is formed in a position, corresponding to the recess, on each of the clamping arms; the sleeve is connected with the sleeve holder through an inner core; the fixing ring is disposed on the double-wire supporting arm and in the inner core, and is configured for pulling out a connection between the inner core and the sleeve; the double-wire supporting arm is of a Y-shaped structure; head ends of the double-wire supporting arm are respectively and directly connected with the holes, and a tail end of the double-wire supporting arm passes through the sleeve, the inner core, the sleeve holder and a spring tube so as to be fixedly connected with a handle at an operation end; the spring tube is fixedly connected with a tail portion of the sleeve holder; the clamping arms are configured such that when being in a closed state, the pin is located at a root portion of a course of an "L"-shaped locking slot, and tail portions of the clamping arms are overlapped and located in the open slots of the sleeve; the double-wire supporting arm is configured such that when being pushed, the two clamping arms are in an opening process: the tail portions of the clamping arms are expanded outwards in the open slots of the sleeve, and at that moment, the pin is located at the root portion of the "L"-shaped locking slot; the double-wire supporting arm is configured such that when being pulled, the two clamping arms are in a closing process: the tail portions of the clamping arms are contracted in the open slots of the sleeve, and at that moment, the pin is still located at the root portion of the "L"-shaped locking slot; the double-wire supporting arm is configured such that when being continued to be pulled, the pin moves forwards in the "L"-shaped locking slot until a top end of the locking slot, and at that moment, the clamping arms are locked; the double-wire supporting arm is configured such that when being further pulled, an overlapped portion of the tail portions of the clamping arms is inserted into an inner hole of the sleeve, and at that moment, the clamping arms are double locked; and the double-wire supporting arm is configured such that when being continued to be pulled, the head ends of the double-wire supporting arm are disconnected from the holes, and then the inner core is separated from the sleeve. wherein a hole is formed in a position, corresponding to the recess, on each of the clamping arms; the sleeve is connected with the sleeve holder through an inner core; the fixing ring is disposed on the double-wire supporting arm and in the inner core, and is configured for pulling out a connection between the inner core and the sleeve; the double-wire supporting arm is of a Y-shaped structure; head ends of the double-wire supporting arm are respectively and directly connected with the holes, and a tail end of the double-wire supporting arm passes through the sleeve, the inner core, the sleeve holder and a spring tube so as to be fixedly connected with a handle at an operation end; the spring tube is fixedly connected with a tail portion of the sleeve holder; the clamping arms are configured such that when being in a closed state, the pin is located at a root portion of a course of an "L"-shaped locking slot, and tail portions of the clamping arms are overlapped and located in the open slots of the sleeve; the double-wire supporting arm is configured such that when being pushed, the two clamping arms are in an opening process: the tail portions of the clamping arms are expanded outwards in the open slots of the sleeve, and at that moment, the pin is located at the root portion of the "L"-shaped locking slot; the double-wire supporting arm is configured such that when being pulled, the two clamping arms are in a closing process: the tail portions of the clamping arms are contracted in the open slots of the sleeve, and at that moment, the pin is still located at the root portion of the "L"-shaped locking slot; the double-wire supporting arm is configured such that when being continued to be pulled, the pin moves forwards in the "L"-shaped locking slot until a top end of the locking slot, and at that moment, the clamping arms are locked; the double-wire supporting arm is configured such that when being further pulled, an overlapped portion of the tail portions of the clamping arms is inserted into an inner hole of the sleeve, and at that moment, the clamping arms are double locked; and the double-wire supporting arm is configured such that when being continued to be pulled, the head ends of the double-wire supporting arm are disconnected from the holes, and then the inner core is separated from the sleeve.