Currently, palm-print sampling instruments all take advantage of PCs to control scanners or image sampling cards to achieve the image sampling. To improve the sampling speed and reduce the noise interference, a new instrument based on Digital Signal Processing(DSP) is proposed and its sampling mechanism,optical structure and hardware circuits are designed. A core, TMS320VC5509A DSP of the TI Company, is used as a control element to extend the storage space while a decoder SAA7113H is controlled to convert the real palm-prints into digital images, so that the sampling procedure is achieved in the off-PC state. An experiment for sampling palm-print images is undertaken and the obtained images are recognized.Experimental results indicate that the sampling time by proposed equipment is 0.6 s for one image and the correct recognition rate is 99.47% ,which shows that this equipment operates at its highest speed, anti-noise character and recognition rate.