The digital display type centripetal force demonstrator is driven by a low-noise DC brushless motor, and the metal ball moves uniformly in a circular motion in a horizontal plane. Built in high-precision photoelectric speed measurement module and force sensor, real-time collection of angular velocity ω, radius r, and centripetal force F, and synchronous display through a 3/4-digit LED digital tube. Students can directly observe the quantitative relationship between "F - Ω² - r - m" and verify the formula F=m Ω² r. Applied to the exploration class of circular motion in high school; College General Physics Experiment "Comprehensive Experiment of Mechanics"; Physics competitions and STEM innovation courses.