Traffic　safety　at　intersections　is　a　major　concern.　Many　crashes　analyses　focus　on　the　safety　effects　of　a　wide　variety　of　geometric　design,　traffic,　and　control　elements　of　at-grade　intersections.　However,　few　studies　account　for　human　factors　in　China　while　approximately　90　percent　crashes　are　somehow　determined　by　human　factors.　Understanding　how　drivers　and　other　roadway　users　interact　within　an　intersection　environment　is　fundamental　to　improve　roadway　safety　and　save　lives.　The　paper　analyzed　field　data　of　crashes　which　occurred　at　unsignalized　intersections.　Then　the　paper　addressed　the　main　human　factors　related　unsignalized　intersections　safety.　The　authors　proposed　some　effective　measures　by　applying　human　factors　principles　that　are　both　systems　oriented　and　human-centered.