This article mainly studies the Faraday magneto-optical rotation effe c t of glucose,glucose oxidase (GOD) and the mixed solution of the two,which pro vides a theoretical basis for glucose sensors based on the Faraday optical rotat ion effect.Studying the optical rotation characteristics of the medium can bett er improve the performance of the photoelectric sensor and apply the photoelectr ic sensor more widely.In the Faraday magneto-optical rotation effect,when a m e dium is in a magnetic field,when plane-polarized light passes through the medi u m,the plane of polarization will rotate by an angle.Place solutions of differe nt concentrations in a magnetic field and use a 532nm laser.The laser light pas ses through the polarizer into plane-polarized light.The plane-polarized ligh t passes through the solution and the analyzer.The intensity of the light passing through the analyzer is recorded according to the Marius′ law calculates the a ngle of rotation.Experiments have found that with the increase of magnetic induc tion intensity,the optical rotation angle and magnetic induction intensity incr ease linearly;with the increase of solution concentration,the optical rotation angle of the solution also increases,and the magnetic field has a greater infl uence on the optical rotation angle of low-concentration solutions.A linear re l ationship can be established to indicate the relationship between concentration and optical rotation angle.