Rigidity-adjustable ureteroscope

A water filling nozzle and an eyepiece connecting end are arranged on a handle, an eyepiece lens is arranged on the surface of the front end, far away from the handle, of a ureteroscope tube, an operation channel is formed in the ureteroscope tube, the tube wall of the ureteroscope tube is made of flexible materials, a cavity is formed in the tube wall, and the handle is arranged in the cavity. The cavity is filled with a magnetic fluid material capable of changing the rigidity, and a magnetic fluid driving structure used for adjusting the rigidity of the magnetic fluid material is arranged on the periphery of the cavity; an adjusting switch is arranged at the position of the handle, the adjusting switch is electrically connected with the magnetofluid driving structure, and when the adjusting switch controls the magnetofluid driving structure to work, the magnetofluid driving structure can change the rigidity of the magnetofluid material. The flexible ureter can be inserted into the ureter in a soft state, ca