The invention discloses a product cleaning line with multi-section lengthened left and right adjacent nozzles abutting against supporting plates. The product cleaning line comprises a base, side plates symmetrically disposed on the left and right sides of the base and a top plate overlapping the upper ends of the side plates. The base, the side plates and the top plate together form a spray rinsing chamber, the bottom of the top plate is provided with hydraulic cylinders in a matched manner, the lower ends of the hydraulic cylinders are provided with a support plate I having a square plate-shaped structure in a matched manner, and a support plate II having a square plate-shaped structure is disposed at the lower end of the support plate I; and the nozzles are arranged at the lower part ofthe support plate II and directly face the spraying surface, thus no spray is avoided. The relative position of the support plate I and the support plate II is adjustable, by controlling the expansionand contraction of the hydraulic cylinders, the positions of the nozzles from the spraying surface can be controlled, multiple spraying effects can be achieved, and the cleaning line has various spray rinsing options; and by applying a vibration effect to the spraying surface with the vibration support block, the activity of the spraying surface is improved, and the development effect can be realized more quickly.