To　investigate　citizens＇　participation　behavior　in　the　lottery　under　the　influence　of　the　license　plate　lottery　policy　(LPLP)　and　to　guide　them　to　participate　in　the　lottery　rationally,　this　paper,　based　on　social　psychology　and　combined　with　the　theory　of　planned　behavior,　divides　citizens　into　citizens　with　cars　in　their　households　and　citizens　without　cars　in　their　households.　This　study　then　separately　constructs　structural　equation　models,　sets　perceived　car　necessity　(PCN),　perceived　behavioral　control　(PBC),　attitude　toward　car　ownership　(ATT),　and　subjective　norms　(SN),　respectively.　These　four　psychological　latent　variables　were　used　to　analyze　the　participation　behavior　of　different　categories　of　citizens　in　the　car　lottery　from　the　perspective　of　psychological　factors.　Our　empirical　study　found　that　there　are　significant　differences　in　age　and　the　number　of　people　living　together.　The　mechanism　of　their　intention　to　participate　in　the　car　lottery　and　the　psychological　factors　are　different.　The　psychological　factors　affecting　the　intention　of　people　with　a　car　and　people　without　a　car　to　participate　in　the　car　lottery　are　SN　＞　ATT　＞　PCN　＞　PBC　and　ATT　＞　SN　＞　PBC,　respectively.　Our　research　results　can　help　to　identify　the　internal　factors　and　mechanisms　that　influence　citizens＇　intention　to　participate　in　the　car　lottery　and　help　government　administrators　to　optimize　the　LPLP.