Pre-assembled continuous sampling forceps

The invention provides pre-assembled continuous sampling forceps. The pre-assembled continuous sampling forceps comprise a clamping unit, a transmission unit and a handle unit. The transmission unit comprises a positioning pipe and a driving pipe; the positioning pipe is used for being placed outside the far end of an endoscope clamping channel, and the near end face of the positioning pipe can abut against the far end face of an endoscope to limit the positioning pipe to enter the endoscope clamping channel; the driving pipe is used for being arranged in the endoscope clamping channel in a penetrating mode and is in sliding connection with the endoscope clamping channel in the extending direction of the endoscope clamping channel; one end of the driving pipe is connected with the clamping unit, the other end of the driving pipe is detachably connected with the handle unit, and the driving pipe is used for being connected with a negative pressure device or an injection device; the clamping unit is movably connected with the positioning pipe and has a closed position and an open position which are switched mutually; and the handle unit is used for driving the clamping unit to move relative to the positioning pipe through the driving pipe to enable the clamping unit to be switched between the closed position and the open position. The pre-assembled continuous sampling forceps are wide in application range and convenient and reliable to operate.