Fish expert research found that adding eucommia leaf powder to the fish's feed can improve the fish's meat quality. The method is: the collected Eucommia leaves dried or dried with fire, ground into a powder, according to the amount of 2% -4% added to the fish feed, preferably made into pellet feed fish. With the addition of Eucommia ulmoides feed, fish not only love to eat, but also can promote digestion, enhance the tenderness of fish, and make fish taste more delicious.