Endoscope and front end shell and front end assembly thereof

The invention belongs to the technical field of medical instruments, and particularly relates to an endoscope and a front end shell and a front end assembly thereof. A partial area of the peripheral wall of the front end shell is bent inwards to form a bent part, the bent part intrudes into the inner space of the front end shell, an installation space used for installing a camera module is formed on one side of the bent part, and the bent part can stop and limit the camera module in the installation space in the radial direction. When the front end shell is used, the camera module can be arranged in the mounting space, and the camera module and the bending part are in limiting fit in the radial direction, so that the camera module is positioned in the radial direction, the risk that the position of the camera module deviates in the process of mounting the camera module can be reduced, and the stability of the camera module is improved. Therefore, the risk of blurred images acquired by the endoscope can be red