Abstract: The Dongping Waterway with a wide and shallow riverbed is dominated by fluvial and tidal currents. According to its features, regulation works with two regulating stages were carried out with satisfactory effects. Based on the analysis of the relationship between the fluvial process and regulation works and sand-borrow on riverbed, it can be seen that the regulation works and heavy sand-borrow have made combined effects of regulation and dredging, and that the sand-borrow activity should be reasonably managed and adjusted.