The invention provides a metering system for a high performance concrete test and a metering method thereof. The metering system comprises a single scale and a complex scale. The single scale is provided with a weighing disc which is arranged in a supporting way through a holder. The complex scale is arranged at one side of the single scale. The complex scale is provided with a weighing hopper which is arranged in a supporting way through a weighing hopper holder, and the weighing disc is arranged on the upper side of the weighing hopper. The problem that the whole test loses the research value due to the fact that the weighing scale has problems in aggregate weighing in the present concrete test, especially the precision problem, and the problems cannot be timely discovered can be solved. The invention belongs to the field of research of the concrete test.