The invention provides a grouped pneumatic lifting system and method for pebble-bed reactor fuel elements. The system comprises a plurality of groups of burnup detection assemblies, a feeder, a lifting pipeline, a gas diverter and a fluid power plant. The number of inlets of the feeder is identical to the number of the burnup detection assemblies the feeder has an outlet, a fuel element is let out from the outlet of the feeder at a preset time interval, and at least two fuel elements are allowed to form a queue in the lifting pipeline and to be lifted at the same time. The grouped pneumatic lifting system and method can realize grouped lifting of fuel elements into a reactor core the number of fuel elements in each group and spacing among the fuel elements are controllable, and under different working conditions, lifting capability can be optimized, conveying efficiency can be improved and energy consumption can be reduced the grouped pneumatic lifting system and method only employs one lifting pipeline and has the advantages of a simple structure, low cost for manufacture, maintenance and utilization and applicability to construction and operation of pebble-bed reactors.
