EBSD　experiments　were　carried　out　using　the　designed　＂　in-situ　＂　observing　method,　through　a　EBSD　scanning　electron　microscope,　at　each　characteristic　point　of　stress-strain　curve　of　Q235　carbon　steel.　The　grain　orientation　graphs　were　obtained,　providing　foundation　data　of　deformation　process　for　further　research.　Since　the　dislocations　started,　moved　and　effected　at　each　other　during　the　deformation　process,　the　portion　of　high　angle　grain　boundary　achieved　a　peak　value　in　grain　boundary　distribution　at　a　strain　of　1%.