The invention discloses DHA (
Docosahexaenoic Acid) 
emulsion, comprising the following components in the 
mass percentage: 22-27% of DHA algal oil, 27-32% of packaging material, 40-45% of water, 0.02-0.05% of 
antioxidant, 3.0-5.0% of stabilizing and 
thickening agent, 0.1-0.3% of emulsifying agent and 2.0-3.0% of 
adhesive. The DHA 
emulsion is prepared by the following steps: firstly preparing a water phase and an 
oil phase, then mixing the materials, emulsifying, homogenizing and finally sterilizing. In application of preparing DHA beverages, the DHA 
emulsion is used as a 
nutrition enhancer and added to 
liquid milk, acid milk, various milk beverages, juice beverages, nutritional and sports beverages and foods in the proportion of 40-180mg / 100g. The production process of the DHA emulsion is simple and feasible, the absorption and utilization ratio of DHA in a 
human body is high. When in use, the DHA emulsion has good dispersing performance, stable light resistance, 
oxygen resistance, acid and alkaline resistance and the like the functions of enhancing memory and thought and improving intelligence, high nutritional value, as well as extremely wide use range.