Pressure-sensitive　paint　(PSP),　as　a　molecular-level　oxygen　sensor,　has　been　widely　used　for　high　resolution　full-field　aerodynamics　measurement　of　aircrafts.　To　apply　PSP　for　the　analysis　and　study　of　aerodynamic　characteristics　of　aircrafts　in　near-vacuum　environment,　PSP　with　sufficiently　high　pressure　sensitivity　at　low　pressures　needs　to　be　prepared　and　studied　to　enable　small　pressure　measurements　in　near-vacuum　environments.　In　this　article,　two　PSPs,　namely　PdTFPP/PTMSP　and　PtTFPP/PTMSP,　with　high-oxygen-permeability　polymer　PTMSP　as　the　binder,　PdTFPP　and　PtTFPP　as　luminescent　molecules,　are　used　to　carry　out　the　static　calibration　characteristics　in　near-vacuum　environment.　Experimental　results　show　that　the　pressure　sensitivity　of　PdTFPP/PTMSP　is　significantly　higher　than　that　of　PtTFPP/PTMSP.　While　the　temperature　sensitivity　and　photostability　of　PdTFPP/PTMSP　are　comparable　to　those　of　PtTFPP/PTMSP,　which　is　more　suitable　for　measuring　small　pressure　changes　in　near-vacuum　environment.　Further　characterization　of　PdTFPP/PTMSP　reveals　that　the　pressure　sensitivity　of　PdTFPP/PTMSP　increases　and　then　decreases　with　the　increase　of　the　concentration　of　luminescent　molecule　and　polymer,　and　reaches　the　highest　value　of　68.65　%/kPa　at　concentrations　of　luminescent　molecule　and　polymer　are　1.2　and　8　mg/mL,　respectively.　The　PdTFPP/PTMSP　with　toluene　as　solvent　has　the　better　pressure　sensitivity　than　the　formulation　with　dichloromethane　or　acetone　as　solvent,　and　has　the　optimum　temperature　sensitivity　and　photostability.　©　2022,　Science　Press.　All　right　reserved.