The agronomic traits,heterosis,genetic background of Italian rice resources were analyzed in the paper. The results indicated that most of them were dwarf or semi-dwarf rice varieties,with large-grain type and belong to mid-early maturing varieties with their whole growth period. Because of their poor adaptability and negative yield performance in Tianjin,the Italian rice resources were not suitable to grow in local field. Nevertheless,it was the big difference of genetic background between Italian and domestic rice resources that made the F1 have stronger heterosis,so the Italian rice resources were excellent parent resource for breed improvement and heterosis utilization。