The utility model provides a device during big template rubber stagnant water piece is prevented partially, utilizes the upper and lower panel frame hole of big template separation department, adopts bolt and band iron intercombination's mode, presss from both sides the stagnant water tight from two upper and lower directions to it is fixed with the stagnant water. This device simple to operate in the work progress, and can not appear among the vibrating process becoming flexible, avoided the phenomenon in the appearance partially of rubber stagnant water piece, improved the closure in irrigated area. Its construction process has obtained the popularization very fast.