Nutrient solution for fish

The present invention discloses a nutrient solution for fish. The nutrient solution is prepared from the following raw materials in parts by mass: 10-15 parts of artemisia argyi, 10-15 parts of cress,5-10 parts of alfalfa, 5-10 parts of wild chrysanthemum, 5-10 parts of perilla frutescens, 5-10 parts of garlic, 20-30 parts of brown sugar, 4-6 parts of yeasts and 2-4 parts of salt. Water at twiceof the raw materials is added into the above raw materials and the raw materials are decocted for 1-2 hours. The nutrient solution is rich in nutrients, contains common traditional Chinese medicinal ingredients, and can effectively prevent occurrence of diseases.