The present invention is related to a therapeutic compound and its application in repairing diabetes-related cardiac injuries, particularly with providing a therapeutic composition containing the Epigallocatechin gallate (EGCG) of green tea and the adipose-derived stem cells. The epigallocatechin gallate (EGCG) of green tea can enhance the ability of the adipose-derived stem cells to repaired damaged tissue. And the appication is repairing the diabetes-related cardiac injuries.本發明是關於一種修復糖尿病性心臟病之醫藥組合物及其使用方法,尤其關於一種提供含有酯型兒茶素(EGCG)和脂肪幹細胞的醫藥組合物,酯型兒茶素(EGCG)能提升脂肪幹細胞能力,增加脂肪幹細胞修復受損組織的能力,以進行修復糖尿病性心臟病之使用方法。