To provide a sorting apparatus for leaves of paper that is capable of indicating the necessary timing to withdraw the leaves of paper and the presence of the leaves of paper in an accumulation part and alarming them without conducting new operation and with conducting the conventional operation as it is.

In the sorting apparatus for leaves of paper sorting and accumulating the leaves of paper in which the predetermined information is described on the surface in accordance with the contents of description and the predetermined sorting condition, when the modified operation for the sorting condition is conducted by an operator, a sorting control part 19 detects it and the sensor 23 indicates via an indicator 16 installed in the accumulation part 15 that there is necessity to remove the leaves of paper from the accumulation part 15 where the sensor 23 has sensed the presence of the leaves of paper in the accumulation part 15.