The invention discloses an asynchronous cutting device. A continuous rubber material released by a rubber material discharge shaft of the asynchronous cutting device is pressed to a first carrier belt released by a first discharge shaft by a first pressing mechanism; after the rubber material is cut into discrete rubber materials by a cutting mechanism, the discrete rubber materials are stripped by a separating mechanism; the stripped discrete rubber materials are transferred to a second carrier belt released by a second discharge shaft, and are pressed to form a finished product rubber belt; and the transfer speed of the second carrier belt is greater than that of the first carrier belt, and the discrete rubber materials are arranged on the second carrier belt in a spaced manner, so that continuous cutting is realized, the raw rubber material is 100% utilized, raw material waste is effectively avoided, and the production cost is reduced.