An endoscope auxiliary device is provided, which can reduce light spot and light shadow formed on an object and improve an accuracy of a result of an endoscope observation. The endoscope auxiliary device includes an operating handle (1) and a probing body (2) connected with each other, wherein, a switching device (3) is provided on the operating handle (1). Optical mesh points (6) are provided on a surface of the probing body (2), and a light source (5) controlled by the switching device and a reflective housing (4) for reflecting light of the light source (5) into the probing body (1) are provided on an end of the probing body (2) close to the operating handle (1).