Abstract: The present invention discloses a method for preparing controlled release type lutein feed additive. Steps: lutein extract, glycerol and fat are mixed and dissolved, then alkali liquor is dropped under condition of mechanical stirring and sheering emulsification to allow the lutein to be fully saponified. Then fat is added and alkaline saponification is conducted, adjusting the viscosity and neutralizing and conducting spray granulation to the mixed liquor to obtain controlled release lutein feed additive. By utilizing the combined effects of glycerol and fat, the present invention realizes saponification and microcapsule formation using simple method.