Pressure-sensitive　paint　(PSP)　technology　is　an　innovative　optical　measurement　method　that　has　been　applied　towards　studying　the　aerodynamic　characteristics　of　Martian　spacecraft　under　low-pressure　conditions.　In　this　study,　the　static　characteristics　and　constancy　of　the　oxygen　pressure　sensitivity　of　PSPs　fabricated　using　either　poly[1-(trimethylsilyl)-1-propyne],　particle-ceramic,　or　mesoporous　silica　particles　as　binders　were　studied　under　low　oxygen　pressure　conditions　using　various　gas　mixtures　with　oxygen　pressure　ratios　ranging　from　1%　to　20.9%.　The　results　showed　that　the　oxygen　pressure　ratio　did　not　affect　the　oxygen　sensing　property　and　temperature　dependency.　PTMSP-PSP　exhibited　the　highest　oxygen　pressure　sensitivity　of　26.78%/hPa　and　the　lowest　temperature　dependency　of　-0.22%/K　among　the　three　PSPs　under　low　oxygen　pressure　conditions.　By　comparing　the　oxygen　pressure　sensitivities　before　and　after　stored　in　different　gaseous　atmospheres,　the　degradation　of　PTMSP-PSP　was　verified　to　be　related　to　the　total　pressure　and　unrelated　to　oxidation,　and　the　degradation　declined　as　the　total　pressure　was　increased.　The　static　calibrations　conducted　in　gaseous　atmospheres　with　high　total　pressure　and　low　oxygen　pressure　ratio　not　only　improve　the　constancy　of　PTMSP-PSP　and　avoid　the　calibration　error　under　low　pressure　conditions,　but　also　alleviate　the　stringent　sealing　requirements　of　the　test　system.