Abstract: In the present study, five indicators associated with genetic characteristics of rams were selected to perform the fuzzy comprehensive evaluation of genetic characteristics of service rams in Ningxia Yanchi breeding farm in 2014 by using fuzzy mathematical theory. The results revealed that in the twelve tested rams, the top-ranked comprehensive score was observed in ZJ mm （0.737 3）, followed by 090829 ram with the score of 0.487 3, and the lowest comprehensive score was observed in 100411 mam （0.326 2）. The data obtained in this study suggest that based on the five selected indicators, the ZJ ram has the best genetic characteristics.