Historically, the Yellow River flowing through cities often became a disaster. According to records, over the past 2000 years, the lower reaches of the Yellow River have broken more than 500 dikes 1. 500, and there have been 26 large-scale diversions. The flood disaster area reaches Tianjin in the north and Jiangsu and Anhui in the south, reaching 250,000 square kilometers. The total amount of sediment carried by the river to the downstream is more than1.600 million metric tons per year on average. Due to the low-lying downstream, the river course descends gently, and the flow velocity turns low, a large amount of sediment is deposited on the river bed, with an average of more than 400 million metric tons per year, and the rest of the sediment flows to the estuary, forming a delta that flows into the sea in the estuary delta, with an average of 6 buildings of more than 20 square kilometers built every year. The Yellow River basin is rich in fertile and primitive fertile land, with magnificent mountains and rivers. The number of residents accounts for a quarter of the total population of China, while the cultivated land accounts for 40% of the whole country.