The present invention provides a new wound-covering material. The wound-covering material is produced by carbonizing a silk material at temperature of 500-1000.degree. C., and a large number of microfine holes are formed in a surface of the silk carbonized body. By carbonizing at such low temperature, the silk carbonized body has flexibility of the silk material, a significant antibacterial property, a high water-absorbing property and a high water absorption rate, so that the silk carbonized body is suitable for the wound-covering material.