The invention discloses an organic mineral substance feed which is prepared from crushed powdery corn, bean meal, mountain flour, cottonseed meal, rapeseed meal and fish meal, rice bran, meat meal, eggshell meal, calcium hydrophosphate, phytase, complex phosphoesterasum, purple perilla, salt, methionine, lysine, vitamin A, vitamin D, vitamin E, vitamin K, nicotinic acid, nicotinic acid, organic zinc, organic iron, organic copper, organic selenium, organic chromium and digua fig stem. The preparation method of the feed comprises the following steps: weighing the components a proportion designed according to growth demands of three stages (green geese, growing geese and adult geese); then charging in a stirrer; passing through a dual-layer insulation packing auger, curing for 10-15s under a steam pressure of 0.8MPa when the temperature of the feed reaches 82 DEG C, extruded into a goose feed with a particle size of 2.0-4.5mm in a granulator circular mould; and when feeding the geese with the feed, adding alfalfa, witloof and formosan lattuce herb, wherein the addition of alfalfa, witloof and formosan lattuce herb accounts for 25 percent of the feed amount for green geese and accounts for 50% of the feed amount for the growing geese and the adult geese. The fed geese fed with the feed grow fast, has strong applicability and high dressing percentage.