The invention provides a cage culture method of the speckled trout. The method includes production and application of culture cages, satisfying the requirements of a culture zone environment, setting culture density, feed preparation, feeding, and daily management. The speckled trough is fed by means of periodic starvation; for example, feeding is stopped for one day after the speckled trough is fed continuously for 7 days; accordingly, feed conversion rate and speckled trough yield are increased. Astaxanthin is added to the feed, so that meat color of the speckled trout is improved evidently.