The trench cover plate made of steel grating has a variety of models to choose from to suit different span loads and requirements. The product has the advantages of simple construction, light weight, good bearing, impact resistance, bending rather than bending, large drainage, beautiful and durable after hot-dip galvanizing, corrosion resistance, and incomparable advantages of cast iron cover plate. Hinge connection or hook connection are adopted for easy opening and anti-theft function.