Cable tray cover is a method for power or communication cable routing works on the cable tray cover, made ​​of sheet steel pressed, the cable tray cover the top surface (1) and the top surface on both sides of hem (2 ) have an uneven surface shape, a top surface (1) on the convex surface (11) and concave (12) to set a continuous phase, each convex surface (11) and concave (12) units on the two ends bent in the same direction as the hemming (2 ), convex (11) with the concave surface (12) is less than 8 mm height difference between the utility model of high-strength structural cable tray cover, cover the entire plane using bump-like structure modeling, thus increasing the shroud rigidity of the steel, increase the strength of the steel, thinner materials can be used, such as using the same strength than the original thickness of more than twice, the main advantage is to reduce costs, product deformation.