In order to control the amplitude and phase of the signal flexibility and precision,a new method about array of underwater acoustic transducers based on DBF is presented.Firstly,according to the Taylor weighting formula,the weights of Taylor of each array element are calculated.Then,DDS technology can generate transmitting signal of each array element,whose phase offset is different.Finally,the 8 element uniform linear array of launch DBF system is designed with high performance FPGA chipset.The simulation and experimental results show that the method not only get low sidelobe transmitting beam,but also it is very accurate to control transmitting beam angle.The analysis about the feasibility in project is presented and some reference is provided for the designs.