It aims to design a high resolution linear CCD data acquisition system based on CPLDfor Kodak′s RGB tricolor linear array CCDKLI14403. The system makes use of Verilog HDL to realize the timing control of functional modules and logic units. Thelinear array CCDKLI14403 is used as the system image sensor and theoutput signals of CCD are processed by the image specific A/D chip. Finally, the realtime transmission of control command and acquisition between upper and lower computer is via the USB2.0 interface. The method not only reduces the difficulty of coordination and control between the modules of the system, but also has the characteristics of accurate driving timing, good antijamming performance, stable output signal and so on. The experiment shows that the system can effectively complete the image signal acquisition with good performance and flexibility and achieve desired results. Meanwhile, it has a certain universality and scientific value.