Although　a　series　of　achievements　has　been　obtained　through　different　degrees　of　exploration,　there　remains　no　obvious　breakthrough　in　oil-gas　exploration　in　the　Yili　Basin.　In　such　cases,　combined　with　previous　studies,　a　series　of　field　geological　survey　for　hydrocarbon　source　rocks　through　collecting　hydrocarbon　source　rock　are　carried　out　samples　from　typical　geological　sections,　and　comprehensively　evaluated　the　maturity,　type　and　depositional　environment　of　Permian　hydrocarbon　source　rocks　by　analyzing　kerogen　and　measuring　saturated　hydrocarbons　and　carbon　isotopes　of　source　rocks　with　gas　chromatography　and　mass　spectrometer.　The　results　indicated　that　source　rocks　in　the　Tamuqisayi　Formation　are　semi-deep　and　deep　lake　deposits　and　their　organic　matter　is　mainly　type　II1,　with　a　single　source　and　moderate　maturity,　being　a　more　favorable　source　rock　in　the　study　area.　While　source　rocks　in　the　Xiaoshansayi　Formation　are　paralic　deposits,　with　a　variety　of　organic　sources　and　at　a　highly　mature　or　overmature　stage,　being　also　a　favorable　source　rock　in　the　study　area.