In order to develop the technology of precise positioning which was applied in the field of micro-operation widely, a precise device of scanning and positioning based on voice-coil actuator was designed and applied on positioning of imaging facula in the measurement of spectra. Based on the contrast of different motor driver, the linear voice-coil actuator was selected as the driving device of precise positioning. According to the classification of different linear DC-motor, working principle, parameters and the basis of selection of the voice-coil actuator were described. The flexible bearing and cantilever were introduced in the structure design, and the stress analysis of the flexible cantilever was performed. With the demand of precise positioning and the working of voice-coil actuator, the special driving device was designed. The performance validation of the scanning device was adopted. The results show that the stable time of the scanning and positioning device is less than 30 ms and the long time working excursion is less than 1.5 μm, so the design requirements of micro-meter of the device were accomplished.