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In order to adapt to the development of electronic technology and the need to generate complex,arbitrary waveform with special features,on the basis of the traditional function of the signal generator,the paper proposes a design scheme which is based on DDS technology,through the master chip DSP and digital to analog converter chip combining the use of seven order elliptic low-pass filter as the overall hardware circuit design .The software design uses functions to generate sampled waveform data and PC software to generate arbitrary waveform data to achieve not only can produce at least 30 kHz the standard function waveform also can produce the highest frequency complex arbitrary waveform of 1 kHz. Through testing,the program which is feasible and easy to implement is suitable for use in scientific research and production.