The invention belongs to the technical field of radioactivity measurement and particularly relates to a radioactive waste barrel loading platform. The radioactive waste barrel loading platform comprises a supporting and fixing platform (4) provided with supporting feet (5) at the bottom, weighing and positioning platforms (3) disposed on the upper surface of the supporting and fixing platform (4),a supporting bearing (6) disposed in the middle of the supporting and fixing platform (4) and a rotating motor (2) capable of driving the supporting bearing (6) to rotate; the weighing and positioning platforms (3) are used for positioning and weighing a radioactive waste barrel (1), and the supporting bearing (6) is used for rotating the radioactive waste barrel (1). The radioactive waste barrelloading platform can be adopted for measuring the activity level of radioactive articles in the large-size radioactive waste barrel, can adapt to the measurement of radioactive waste barrels different in size or the operation of different measurement articles, and has the advantages of being high in efficiency and precision, simple in structure, easy to operate and flexible.