▎ 摘　　要

NOVELTY - Medicine carrier composite material comprises 10-60 pts. wt. egg shell powder, 200-300 pts. wt. ammonium dihydrogen phosphate and 1-10 pts. wt. graphene oxide. USE - Medicine carrier composite material used for biological medicine delivery (claimed). ADVANTAGE - The preparation method is simple, inexpensive and convenient. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of medicine carrier composite material comprising taking raw materials, dissolving ammonium dihydrogen phosphate in deionized water, dispersing eggshell powder, adding graphene oxide, mixing, reacting at 80-140 degrees C for 18-30 hours, cooling, washing, and drying.