By measuring the refractive index of a solution at various temperatures, the relationship between itsoptical properties and temperature can be better understood."The Michelson interferometer, a precision opticameasurement tool, is widely used to measure refractive index. However, traditional Michelson intererometersrequire manual reading, which introduees subjeetivity and reduees aecuraey,ln this study, we designed andbuilt a Michelson interferometer system with intelligent reading capabilities to measure the refractive index ofdistilled water and a696 sodium chloride solution at different temperatures.During the experiment, the liquid tobe measured is placed in one optieal path of the interferometer, while the other path serves as a referenee,Aheating rod and temperature sensor are placed in the solution to heat it to the target temperature,The refractiveindex is then caleulated based on the changes in the interference fringes. Additionally, this study utilizes0penCV-based image proeessing technology to develop a prgram that allows the computer to automaticallydetect the image and caleulate the refraetive index at each temperature,This is done using a known referencefor refractive index and its relationship with temperature, and the corresponding data is presented in graphicalform for visual clarity,The experimental results demonstrate the system's effectiveness and highlight its potentialfor aecurate refractive index measurement in solutions.