The utility model provides a double -deck dewatering screen, including support, spring, screen frame, vibrating motor, upper screen cloth, lower floor's screen cloth and fixed part, support upper portion is equipped with the spring, and the spring passes through the curb plate that the screen frame is connected to the fixed part, vibrating motor locates screen frame upper portion, upper strata screen cloth and lower floor's screen cloth lie in the screen frame below, the upper strata screen cloth is formed by polyurethane slot screen plate concatenation combination, the strip seam is the under the narrow width structure, lower floor's screen cloth is formed in the skeleton complex by whole the pasting of stainless steel woven screen.