A developing device includes spiral wings, a forward double spiral wing, clearance portion, backward double spiral wing, and short lead backward spiral wing installed on the rotational shaft of a stirring and carrying unit. The forward and backward double spiral wings have spiral directions opposite to each other, and together are formed to have an equal lead to the spiral wings. The supplying and carrying unit is disposed above the stirring and carrying unit, and the supplying and carrying unit and the stirring and carrying unit are divided by a partition having a communication portion installed at a position corresponding to the forward and backward double spiral wings.