The present invention provides a suture reinforcement material that is for use by an automatic suturing device and that is excellent in reinforcing effect. The suture reinforcement material for an automatic suturing device comprises a sheet (A) containing at least one biodegradable and bioabsorbable material selected from the group consisting of aliphatic polyesters, polyester ethers, and copolymers thereof, the sheet (A) having, on at least one surface thereof, a layer (B) containing a hydrophilic polymer.
