An automatic fiber cleaning system, comprising: a first mounting plate and a second mounting plate arranged to be movable relative to each other; a first cleaning module mounted on the first mounting plate, comprising: a first cleaning belt; a first driven belt wheel on which an unused portion of the first cleaning belt is wound; a first driving belt wheel on which a used portion of the first cleaning belt is wound; and a first pressing tool on which the first cleaning belt is tightened; a second cleaning module mounted on the second mounting plate, comprising: a second cleaning belt; a second driven belt wheel on which an unused portion of the second cleaning belt is wound; a second driving belt wheel on which a used portion of the second cleaning belt is wound; and a second pressing tool on which the second cleaning belt is tightened; and a sprayer configured to spray a cleaning agent onto the first cleaning belt and the second cleaning belt tightened on the first pressing tool and the second pressing tool, wherein the first pressing tool and the second pressing tool are cooperated with each other to press the first cleaning belt and the second cleaning belt on both sides of an optical fiber to be cleaned, respectively, so that the optical fiber to be cleaned is clamped between the first cleaning belt and the second cleaning belt, and wherein the first cleaning belt and the second cleaning belt are driven to move relative to the optical fiber by the first driving belt wheel and the second driving belt wheel, so as to wipe the optical fiber. a first mounting plate and a second mounting plate arranged to be movable relative to each other; a first cleaning module mounted on the first mounting plate, comprising: a first cleaning belt; a first driven belt wheel on which an unused portion of the first cleaning belt is wound; a first driving belt wheel on which a used portion of the first cleaning belt is wound; and a first pressing tool on which the first cleaning belt is tightened; a first cleaning belt; a first driven belt wheel on which an unused portion of the first cleaning belt is wound; a first driving belt wheel on which a used portion of the first cleaning belt is wound; and a first pressing tool on which the first cleaning belt is tightened; a second cleaning module mounted on the second mounting plate, comprising: a second cleaning belt; a second driven belt wheel on which an unused portion of the second cleaning belt is wound; a second driving belt wheel on which a used portion of the second cleaning belt is wound; and a second pressing tool on which the second cleaning belt is tightened; and a second cleaning belt; a second driven belt wheel on which an unused portion of the second cleaning belt is wound; a second driving belt wheel on which a used portion of the second cleaning belt is wound; and a second pressing tool on which the second cleaning belt is tightened; and a sprayer configured to spray a cleaning agent onto the first cleaning belt and the second cleaning belt tightened on the first pressing tool and the second pressing tool, wherein the first pressing tool and the second pressing tool are cooperated with each other to press the first cleaning belt and the second cleaning belt on both sides of an optical fiber to be cleaned, respectively, so that the optical fiber to be cleaned is clamped between the first cleaning belt and the second cleaning belt, and wherein the first cleaning belt and the second cleaning belt are driven to move relative to the optical fiber by the first driving belt wheel and the second driving belt wheel, so as to wipe the optical fiber. wherein the first pressing tool and the second pressing tool are cooperated with each other to press the first cleaning belt and the second cleaning belt on both sides of an optical fiber to be cleaned, respectively, so that the optical fiber to be cleaned is clamped between the first cleaning belt and the second cleaning belt, and wherein the first cleaning belt and the second cleaning belt are driven to move relative to the optical fiber by the first driving belt wheel and the second driving belt wheel, so as to wipe the optical fiber.