Herein,　a　novel　method　for　hierarchically　porous　mullite　ceramics　with　complex　and　fine　structure　was　proposed,　that　is　vat　photopolymerization　of　multi-phase　Pickering　emulsion.　Pickering　emulsions　stabilized　by　mixed　particles　features　water　in　oil　type,　high　solid　content,　suitable　rheological　properties　and　excellent　ultravioletcuring　ability,　making　them　appropriate　pastes　for　vat　photopolymerization.　The　printed　components　possess　hierarchically　porous　structure　involving　interconnected　mm-scale　pores　designed　by　three-dimensional　model,　uniform　mu　m-scale　pores　derived　from　emulsion　droplets　and　less　voids　generated　by　the　removal　of　photosensitive　resin　in　the　location　of　continuous　phase.　Therefore,　porous　mullite　ceramics　with　octet　lattice　structure　possess　excellent　compressive　strength　up　to　4.3　MPa　at　high　porosity　of　74.08%　compared　to　the　counterparts　from　pure　resin-based　suspension.　The　products　from　this　facile,　universal　and　effective　method　could　serve　as　ideal　candidates　for　catalytic　filters,　biological　scaffolds　and　electronic　components　owing　to　their　designable　structure　and　outstanding　multifunctionality.