The　microstructure　of　NiAl　matrix　high　temperature　lubricating　composites　containing　BaO/TiO2　metallic　oxides　were　investigated.　The　NiAl-BaO/TiO2　composites　were　fabricated　by　vacuum　hot-pressing　sintering.　The　diffraction　peaks　of　NiAl　slightly　shifted　to　the　left　with　the　addition　of　BaO/TiO2　metallic　oxide.　The　crystal　plane　distance　of　NiAl　phase　in　the　composite　was　bigger　than　that　in　NiAl　material　according　to　the　Bragg　equation.　Meanwhile,　the　lattice　distortion　and　dislocation　occurred　in　the　composite　structure,　which　is　probably　due　to　the　Ti　element　dissolve　in　the　NiAl　matrix　during　sintering.　The　cohesive　energy　and　formation　enthalpy　of　NiAl　were　improved　with　the　incremental　of　Ti　solution　contents　through　density　functional　theory　calculations,　which　was　indicated　that　the　Ti　element　could　dissolve　in　the　NiAl　and　was　in　good　accordance　with　the　results　of　XRD　and　TEM.