Three-phase　interleaved　boost　converter　has　the　characteristics　of　small　input　current　ripple　and　high　power　density.　However,　unknown　external　disturbances,　temperature　change　can　cause　inductive　device　parameter　mismatch　and　control　performance　degradation.　To　solve　this　problem,　this　paper　proposes　a　model　predictive　control　method　based　on　compensation　function　observer　(CFO).　Firstly,　the　mathematical　model　of　the　boost　converter　is　established,　and　a　predictive　model　including　parameter　disturbance　terms　is　constructed.　Secondly,　the　CFO　is　designed　to　observe　the　disturbance　terms　in　the　system　and　compensate　for　the　fixed　errors　of　the　traditional　observer,　thereby　improving　the　accuracy　of　the　system.　Thirdly,　to　achieve　better　dynamic　performance,　both　the　inner　and　outer　loops　employ　model　predictive　control　(MPC).　Finally,　the　effectiveness　and　superiority　of　the　proposed　method　were　validated　through　experimental　tests　on　the　dynamic　performance　and　robustness　of　the　boost　converter.　©　2023　IEEE.