A developing apparatus includes a first auger and a second auger for respectively conveying a developer in a first direction and a second direction, an opening for delivering the developer from the first auger to the second auger, a discharger located in the first direction from the opening to discharge the developer conveyed by the first auger, and a retention member provided on at least one of the first auger and the second auger to retain the developer circulated by the first and second augers.