Abstract:Remarkable achievements have been made in the digital twin construction of Weishan Irrigation District during the 14th Five-Year Plan period. A "1+3+N" digital twin system has been established, consisting of one digital twin platform, highlighting three major demands including optimal water resources dispatch, flood & drought disaster early warning, and sediment transport and silt reduction, as well as strengthening multiple business applications. It delivers strong support and scientific and technological impetus for high quality development of irrigation districts in the new stage. By sorting out the digital twin construction scheme of Weishan Irrigation District in the 14th Five-Year Plan period, this paper summarizes key construction contents and experience, and puts forward ideas for intelligent construction of Weishan Irrigation District in the 15th Five-Year Plan period, so as to offer references for the construction of smart irrigation districts in Shandong Province.