Disclosed is a breakpoint setting apparatus capable of setting a breakpoint without imposing any burden on a programmer. The breakpoint setting apparatus includes an edited-line list manager 115 for managing an address of an edited line in a source code, and a breakpoint setting/disabling sub unit 106 for setting a breakpoint at the address stored in the edited-line list manager 115. The breakpoint setting apparatus automatically sets a breakpoint on each line where the programmer makes an edit without any specific instruction from the programmer.