The present invention relates to a bacteriophage having a specific bactericidal activity against Salmonella, a composition for the prevention or treatment of infectious diseseases comprising the bacteriophage as an active ingredient, an antibiotic comprising the bacteriophage as an active ingredient, an animal feed or drinking water comprising the bacteriophage as an active ingredient, and a sanitizer or cleaner comprising the bacteriophage as an active ingredient. The bacteriophage of the present nvention has a specific bactericidal activity against Salmonella choleraesuis, Salmonella typhimurium, Salmonella derby, Salmonella infantis, or Salmonella newport with no influences on beneficial bacteria, as well as excellent acid- and heat-resistance and desiccation tolerance. Therefore, the bacteriophage can be used for the prevention or treatment of salmonellosis or salmonella food poisoning, which is an infection disease cuased by Salmonella choleraesuis, Salmonella typhimurium, Salmonella derby, Salmonella infantis, or Salmonella newport, and also widely used in animal feeds, drinking water for livestock, sanitizers, and cleaners.