The microfeeding tool mechanism based on piezoelectric ceramics driving is an important approach to meet the precision machining requirements. In order to further increase the driving displacement of the microfeeding tool holder,we add a flexible hinges micro displacement amplification mechanism in the microfeeding tool holder,which can amplify the output displacement of piezoelectric ceramic actuator.Four kinds of micro displacement amplification mechanism have designed in this paper, and the theoretical calculation of the static stiffness has been carried out, the modeling and finite element numerical simulation analysis for the four kinds of micro displacement amplification mechanism have also been established and performed by using the ANSYS software.The static characteristics of different types of micro displacement amplification mechanisms, such as magnification, load capacity and stress, hasve been compared, which laid a good foundation for optimizing and designing the microfeeding tool mechanism.