Abstract: The intake towers of Xiao Langdi Project are the largest and most complex ones in the world,which consist of 16 intake tunnels and is charged with the tasks such as flood-relief, power generation,drainage of sediment and irrigation of Xiao Langdi Multi-purpose Dam. The advanced ROTEC concrete placement system is used in the construction of the intake tower, therefore, the construction method is greatly simplified, the construction strength is improved, and construction the speed is assured. This method also offers valuable experience for the construction management and method of the future mass concrete construction in our country.