In order to improve isolation degree o f disturbance for than traditional controller,the two-stage active disturbance rejection controller (ADRC) based on current loop in the platform with two axes and four frames is proposed.First ,the high-accuracy gyro is used in outer frame.And then,based on bandwidth parameterization,the ext ended state observer (ESO) and the two-stage ADRC are designed.Finally the experiment is performed to test the disturbance rejection performance of the ADRC based on current loop when the speed disturbance is from 0.1Hz to 2.5Hz compared with the traditional square lag-lead compensation method.Experiment results sh ow that the two-stage ADRC can reduce the disturbance error by 9.65dB at least.And the isolation degree of dis turbance is improved obviously when the perturbation frequency is more than 0.5Hz,and the best isolation degree of disturbance is increased by 16.08dB.And the ADRC has strong robustness,allowin g the range of system parameters to change in 17%.In conclusion,the ADRC based on current loop satisfies the performance requirements of aerial phot oelectrical stabilized platform and has higher practical value.