There is provided a medical material that retains the properties which are inherent in a polyanionic polysaccharide being a raw material, that has a high level of safety because there is no need to use a chemical crosslinking agent during production, and that has a moderate strength with which a suture and the like can be conducted. The medical material is provided with a reinforcement material and a film section penetrating at least a portion of the reinforcement material to be integrated with the reinforcement material. In the medical material, the film section is formed by water-insolubilizing a film precursor section made of a raw material containing a water-soluble salt of a first polyanionic polysaccharide with a treatment liquid containing a first acid anhydride, and the reinforcement material is nonwoven fabric or woven fabric containing a biodegradable/absorbent polymer material, or a sponge-like carrier or a felt-like carrier formed by water-insolubilizing a raw material-shaped body made of a raw material containing a water-soluble salt of a second polyanionic polysaccharide with a treatment liquid containing a second acid anhydride.
