Flexible ureteroscope sheath with stone filter

The utility model discloses a flexible ureteroscope sheath with a stone filter. The flexible ureteroscope sheath comprises a tubular sheath body and a diversion groove sleeving the tail end of the sheath body, wherein the tail end of the diversion groove is connected with the stone filter, the stone filter is a container with an concave opening at the top, a water-permeable hole A is formed in the top of the side wall of the concave opening, the bottom of the container is communicated with a drainage bag, liquid carrying stones flows into the concave opening through the diversion groove, the stones deposit at the bottom of the concave opening, the liquid flows into the container through the water-permeable hole and then flows into the drainage bag, and the postoperative stones can be conveniently collected through the stone filter for medical research and the like.