A new force transducer is designed based on Michelson interference principle and springs. Liner array CCD is used as electro-optic sensors to capture the light intensity signal of interference circles and the electric signal is processed by MSP430 SCM. The designed counting software of Michelson interference circles are used to figure out the number of interference circle automatically. The deformation of springs can be calculated automatically and precisely to realize all external forces measurement. The force can be displayed on low-power OCM126864-9 LCD screen by writing corresponding program. Analysis shows that the force transducer has the features of high measurement accuracy and intelligence.