The invention provides an automatic bus transfer test method, device and an automatic bus transfer tester, which relate to the technical field of power supply by a power system. The method comprises steps: an automatic bus transfer test type inputted by a user is acquired; according to the automatic bus transfer test type, a pre-stored automatic bus transfer connection loop corresponding to the automatic bus transfer test type is searched, and the automatic bus transfer connection loop is displayed to the user for being selected by the user; when the automatic bus transfer connection loop selected by the user is received, automatic bus transfer test items corresponding to the automatic bus transfer connection loop are created; the automatic bus transfer connection loop selected by the useris started, and the automatic bus transfer test items are tested according to a pre-stored automatic bus transfer action logic mode. According to the automatic bus transfer test method, the device and the automatic bus transfer tester provided by the invention, a complex wiring process can be avoided, errors do not happen easily, automatic bus transfer normal actions can be effectively tested, the test efficiency is improved, and the normal operation of power equipment can be ensured.