According to the structure characteristics and working principles of 9 SPS parallel six axis piezoelectric accelerometer, a measurement system consisting of multi channel charge amplifier, signal acquisition and processing units has been designed. By optimizing the conventional charge amplifier, the designed charge amplifier not only has smaller size, but also its measurement range, filter parameters and the gain can be controlled by program, thus the measurement can be carried out automatically. Taking account of speed and flexibility, the signal acquisition and processing unit is designed on a structure based on FPGA and DSP, so as to make sure the ability of real time process. Compared with traditional measuring system, this system has the features of high precision, small volume, low cost, easy to use and good human machine interaction and so on.