The present invention relates to a radiopharmaceutical distribution device. Thus, the present invention provides the radiopharmaceutical distribution device comprising: a vial for storing an object selected from radiopharmaceuticals or radioactive isotopes; an object supply unit which checks radioactivity by extracting the object stored inside the vial as much as a set amount so as to temporarily store or discharge the same, and which measures radioactivity of the residual object of the discharged object; a saline solution supply unit which is selectively communicated with the object supply unit so as to discharge a saline solution that is to be mixed with the extracted object; and an injection part for storing the object having a specific radioactivity and discharged from the object supply unit and the saline solution of a set volume discharged from the saline solution supply unit in a mixed state.