本文介绍基于FPGA和DDFS技术，应用Altera公司的FPGA开发工具DSP Builder设计数字移相信号发生器，该数字移相信号发生器的频率、相位、幅度均可预置，分辨率高，精确可调。-This paper introduces FPGA and DDFS technology based on FPGA development tools DSP Builder design of digital phase shift signal generator using Altera, frequency, phase and amplitude can be preset, the digital phase shift signal generator with high resolution, accurate adjustable.