The genus tilapia native to Africa and South-east Asia has been an important food fish in the world,which grows fast,eats roughage and tastes good.Tilapias are supplied by two normal ways,that is capture and aquaculture.In 1990's,the aquaculture of Tilapia grows up into the world and the output of the aquaculture increasingly exceeds that of the capture.The main breed of tilapia aquaculture is the Nile tilapia.In the meanwhile,the processing and trade of tilapias develop rather rapidly.On the basis of the statistics from 1981-2002 about the tilapia capture and aquaculture furnished by FAO,the paper analyzes the dynamic characters of the industry of tilapias.Since the output of China's tilapia aquaculture ranks first in the world,it is necessary to promote it to a higher position.