Abstract: The contents of water, soluble sugar, protein and heavy metals （cadmium, lead, mercury） in rice with selenium enrichment in Ankang city were determined by the corresponding method. To study whether the presence of selenium in Se-enriched rice can cause the decrease of nutrient composition or the increase of heavy metal content in rice. The results showed that the nutrient water content of Se-enriched rice was 8.047~14.055 g/100 g,soluble sugar 6.09~9.39 mg/g, protein 7.714~9.225 g/100 g, mercury 0.013 7~ 0.017 2 mg/kg, lead 0.089~0.162 mg/kg, cadmium 0.074~0.171 mg/kg, all in line with the national standard. Se-enriched rice can be accepted by the human body, and can supplement the corresponding nutrition.

Key words: Se-enriched rice, nutritional ingredient, heavy metal