[Problem to be Solved] It is intended to provide a composition for hemostasis which can be uniformly applied to a bleeding site and exerts a high hemostatic effect. [Solution] The present invention provides a composition to be applied as a spray to a subject, the spray being used for hemostasis, and the composition comprising a self-assembling peptide, wherein the self-assembling peptide self-assembles and thereby gels when the composition is applied to a bleeding site of the subject, and the self-assembling peptide is contained in the composition at a concentration at which the composition has an improved hemostatic ability as compared with that when directly applied.
