The utility model discloses a conveyer belt cleaning device and conveying belt structure, conveyer belt cleaning device includes cylinder or hydro -cylinder (4), wherein, the front end of piston rod (41) of cylinder or hydro -cylinder (4) is provided with the portion of cleaning (3), the portion of cleaning (3) is including base (33) and cleaning body (31), base (33) with piston rod (41) are connected, and along the axial direction of piston rod (41) be provided with cleaning body (31) that are used for cleaning conveyer belt (2) bottom surface on the preceding terminal surface of base (33). The utility model discloses a problem of the wearing and tearing having avoided the setting of cylinder or hydro -cylinder probably existing between cleaning device roller lead screw and the slider, and then the problem of the clean effect of having avoided from this leading to of reduction, conveyer belt cleaning device sets up in the conveyer belt bottom simultaneously, has avoided this conveyerbelt cleaning device to take the influence of transported substance article to the conveying, and can utilize conveyer belt self gravity and the inseparabler laminating of conveyer belt.