A modular endoscope structure, comprising: an endoscope handle (1), an endoscope sheath (2), and an endoscope tube (3) provided inside the endoscope sheath (2). A first connecting sleeve (4) is fixedly connected to a rear end of the endoscope sheath (2). The first connecting sleeve (4) is internally provided with a first connecting pin shaft (13). A second connecting sleeve (5) that is sleeved on the first connecting sleeve (4) is fixedly connected to a front end of the endoscope handle (1). The second connecting sleeve (5) is internally provided with a second connecting pin shaft (14) matching the first connecting pin shaft (13). The endoscope is divided into a front module and a rear module so that the front and the rear modules are detachable. The front module is disposable. The rear handle is an operational portion that can be used multiple times. A connecting mechanism therebetween uses rotation or horizontal insertion of a connecting hook to connect the front and the rear modules. A wire (8) is used to control a bending angle of the endoscope tube (3). The endoscope has a simple structure and is easy to use. Only the front sheath thereof is disposable, effectively reducing the cost of consumable endoscope components as well as reducing nosocomial cross-infection.
