Disclosed is an endoscope with an enlargeable distal end, including an inserting portion and an endoscope main body. The inserting portion includes a housing, a working cavity, a camera, and an wire band. The working cavity, the camera and the wire band are all disposed in the housing. One end of the wire band is connected to the camera, and the other end the wire band passes through the housing to be connected to the endoscope main body. The camera is arranged at a distal end in the housing, where there is provided a notch. The working cavity or the camera can extend out from or retract back into the notch. When the working cavity or the camera extends out from the notch, the working cavity and the camera are situated side by side. The endoscope with the enlargeable distal end can achieve the enlargement and retraction of the distal end of the endoscope. The distal end of the endoscope is enlarged after passing through a narrow human body tract so that the working cavity or the camera extends out and the working cavity or the camera are posed side by side, thereby significantly increasing an inner diameter of the working cavity, allowing more instruments to pass through to take out larger foreign matters, and providing more ideal 3D images.
