Counter-terrorism　personnel　need　to　address　both　stabbing　and　shooting　threats　when　dealing　with　urban　violent　terrorist　attack.　Single-function　protective　gear　is　insufficient　to　ensure　life　safety.　A　multifunctional　protective　effect　can　be　achieved　by　combining　the　bulletproof　and　stab-resistant　materials　based　on　their　protective　mechanisms.　Currently,　the　development　of　dual-protection　suits　based　on　composite　materials　primarily　relies　on　trial　and　error　in　experiments,resulting　in　low　design　efficiency　and　high　costs.　To　address　this　issue,a　theoretical　design　and　optimization　method　is　proposed　for　fiber-mixed　bulletproof　and　stab-proof　structures　based　on　energy　absorption　criteria.　Ballistic　experiment　and　dynamic　puncture　test　are　conducted　using　single　protective　materials,namely　resin-coated　aramid　fabric　and　unidirectional　ultra-high　molecular　weight　polyethylene(PE)fabric.　The　ballistic　and　puncture　kinetic　energy　absorptions　of　single　material　are　calculated.　Based　on　the　law　of　energy　conservation,a　combined　bulletproof　and　stab-proof　structure　with　a　given　areal　density　of　8　500　g/　m2　is　designed,and　the　range　of　layers　for　bulletproof　and　stab-proof　materials　is　determined,After　validation　through　ballistic　and　dynamic　puncture　experiments,the　theoretical　calculations　demonstrate　sufficient　safety　margins,The　combination　of　11　layers　of　resin-coated　aramid　fabric　and　18　layers　of　unidirectional　PE　fabric　meets　the　requirements　of　GA68-2019　Police　Stab-resistant　Clothing　and　police　level　III　bulletproof　standards　while　being　the　lightest　with　an　areal　density　of　8　390　g/　m2.　The　bulletproof　and　stab-proof　structure　is　optimized　to　achieve　the　lightest　combination　structure　with　an　areal　density　of　8　370　g/　m2,consisting　of　9　layers　of　resin-coated　aramid　fabric　and　21　layers　of　unidirectional　PE　fabric.　These　research　findings　can　provide　reference　for　the　engineering　design　and　innovative　application　of　dual-protection　suits.　©　2025　China　Ordnance　Industry　Corporation.　All　rights　reserved.