The invention provides a quantitative turnover box loop conveying process for a cigarette packaging production line. The cigarette at the outlet of a packaging machine is filled in a hollow turnover box; a coded RFID information identification card is embedded in the hollow turnover box; the loaded turnover box is conveyed to the vicinity of a target case packer by a loop elevated conveyor line; a control system reads work information through RFID identification; the elevated conveyor line automatically executes a descending and unloading program; meanwhile, the control system eliminates the code of the RFID information identification card of the loaded turnover box, the turnover box is descended and the finished cigarette is unloaded from the box and transferred into the inlet of the case packer; meanwhile, the turnover box required to be returned due to failure is conveyed to a manual handling stack for processing by the loop elevated conveyor line, and when the case packer is suspended or busy, the conveying control system makes the loaded turnover box idle around the loop elevated conveyor line for cache. The scheme has the advantages of simple structure, high conveying speed and stable operation.