To study the regional distribution features of aroma characteristics,the regional distribution maps of aroma characteristics of 225 tobacco leaf samples from Henan Province were drawn by Kriging interpolation method in ArcGIS.The results showed that:(1) the aroma quality of flue-cured tobacco from Henan Province tobacco-growing areas ranged from better to slightly better and aroma quantity ranged from just a little to much.The ability of diffusiveness expressed slight to a little strong and the raw green odour,immature odour and ligneous odour were tiny;(2) there were significant differences between the aroma quality and scorched odour and no statistical differences among the aroma quantity,diffusiveness,raw green odour,ligneous odour and immature odour from different counties;(3) there were trends that scale of aroma quality increased from southwest to both north and east,aroma quantity showed a patchy distribution in space,diffusiveness decreased from east to west,scorched odour increased from west to both north and south,ligneous odour increased from north to south and green odour increased from south to north.