To easily and uniformly provide dough by cutting a disc rice cake at uniform velocity, putting it on a specified working line and lining and longitudinally and laterally cutting it.

The confectionery dough producing device to produce confectionery dough by longitudinally and laterally cutting the disc rice cake after cutting it in a belt constitutes its characteristic feature of providing a speed control device to control rotation of a spindle to fix the disc rice cake and delivery speed of a cutting blade by corresponding them to each other so as to make cutting linear speed and cutting thickness of the belt type rice cake uniform and setting a device to detect and adjust moving speed of the belt type rice cake and a longitudinal and lateral cutting device of the belt type rice cake.