The invention relates to the field of medical metal materials, in particular to an Fe-Mn-Cu-C system alloy and medical application thereof. The alloy comprises the components of, by weight, 10-35% ofMn, 0.2-5.0% of Cu, 0.2-1.5% of C, and the balance Fe. The feature that Fe corrodes in the human body environment and is biodegradable is used, the proper amount of Mn, Cu and C elements are added into the Fe, the Fe-Mn-Cu-C system alloy is prepared through casting and forging, and through the synergistic effect of the alloy elements, the mechanical property of the alloy and the corrosion rate ofthe alloy in the living organism environment can be improved, and the material has the various beneficial biological functions. The Fe-Mn-Cu-C system alloy having the mechanical property, degradationproperty and biological activity is especially suitable for implantation device materials in the medical field. Therefore, when products are designed, according to the different clinical applicability, the excellent properties of Fe-Mn-Cu-C materials are sufficiently given full play, and corresponding suture lines, anastomosis nails, cardiovascular stents, braided mesh supports and the like can beprepared.