Provided is a novel prophylactic and/or therapeutic agent for a pneumococcal infection. It is found that bacteria belonging to the genus enterococcus can prevent and/or treat a pneumococcal infection. Provided is a prophylactic and/or therapeutic agent for a pneumococcal infection, said agent containing bacteria belonging to the genus enterococcus. Provided is a prophylactic and/or therapeutic medicine for a pneumococcal infection, said medicine containing bacteria belonging to the genus enterococcus. Provided is a prophylactic and/or therapeutic food for a pneumococcal infection, said food containing bacteria belonging to the genus enterococcus.