Microplot experiment was used in a paddy field to study the fate of nitrogen and its effect on rice yield when ¹⁵N-labelled goat feces and rice straw were applied alone or in combination with urea as basic fertilizer. The results showed that ¹⁵N recovery from goat feces by rice grain accounted for 7.9% and 9.2%,respectively, being equivalent to 2.2% and 2.6% of ¹⁵N in the feed-rice straw respectively. By using rice straw to feed goats and returning the goat feces to the field, ¹⁵N recovery by goat body and rice grain was 33.4% and 33.7% respectively, which was higher than ¹⁵N recovery from rice straw by rice grain (9.9% and 14.5% respecti-vely) as rice straw was applied directly to the soils.