Abstract: In order to test the solid propellant micro-thruster array,a testing stand with four high-precision piezoelectric quartz sensors was designed to measure the main thrust and the coordinates of working thrusters in the array.The static calibration method was discussed,and harmonic analysis was also performed.The X-shaped plate was shrunk by more than 85% in material weight by the means of topology optimization.At last the thrust stand can meet the test requirements in theory.