Sustainable　habitat　construction　on　Mars　faces　significant　challenges,　including　low　atmospheric　pressure　hindering　hydration,　reduced　gravity　complicating　compaction,　and　large　habitat　pressure　differentials.　This　study　presents　an　integrated　In-Situ　Resource　Utilization　(ISRU)　approach　combining　high-strength　regolith　bricks,　hydration-free　sulfur　bonding,　and　a　modular　pyramid　habitat　design　validated　by　Finite　Element　Analysis　(FEA).　Optimized　mechanical　compaction　(40　MPa)　of　nano-SiO2-enhanced　Martian　regolith　simulant　effectively　bypasses　hydration　constraints,　achieving　compressive　strengths　exceeding　20　MPa　even　at　ambient　temperatures.　A　systematic　parameter　study　(pressure,　particle　size,　water　content,　temperature)　yielded　predictive　design　equations　and　demonstrated　potential　strength　enhancement　up　to　44.5　MPa　with　thermal　treatment　(1000　degrees　C).　Furthermore,　a　robust,　hydration-free　sulfur-based　mortar　was　developed　for　modular　assembly;　optimized　flat-cut　interfaces　yielded　bond　strengths　exceeding　2.0　MPa,　crucially　shifting　the　failure　mode　from　the　bond　interface　to　the　brick　material　itself　(ensuring　a　reliable　minimum　tensile　capacity　＞1.2　MPa).　Leveraging　these　advancements,　a　pyramid-shaped　habitat　module,　advantageous　for　Martian　environmental　loads　(including　a　101.3　kPa　internal　pressure　differential　and　3.71　m/s(2)　gravity),　was　designed.　FEA,　incorporating　experimentally　derived　material　properties　(e.g.,　22　MPa　compressive　strength,　1.2　MPa　tensile/bond　capacity),　confirmed　the　structural　integrity,　with　maximum　predicted　tensile　stress　(1.15　MPa)　remaining　below　the　bond　limit.　This　research　provides　a　comprehensive,　experimentally　validated　framework-from　material　development　and　bonding　to　structural　application-for　constructing　resource-efficient,　durable　habitats　on　Mars,　significantly　advancing　solutions　for　sustainable　extraterrestrial　infrastructure.