The linear piezoelectric motor has a wide application prospect in precision instrument, biomedical and semiconductor packaging industries. Their stator structural characteristics directly affect the stability and output performance of the motor. Taking the displacement output characteristic of a stator driven foot of a linear piezoelectric motor as the optimization target, the optimal design method of the motordriven foot structure is studied to improve the comprehensive output performance of the motor. By analyzing the microscopic geometric displacement characteristics of the driving foot, the influence of the driving foot structure parameters on the macroscopic motion characteristics of the output is theoretically studied. The output characteristics of the driving foot under different structures are studied, and the structural parameters and optimal values of the driving foot are determined. In the end, the displacement output performance and mechanical properties of the optimized foot drive are simulated and analyzed. The optimized motor prototype is fabricated and the mechanical output performance of the motor is tested. The experimental results show that the output force of the motor is 0.64 N, which is 52.4% higher than that before optimization.