A photosensitive material processing apparatus has an out side unit (410), an inside unit (CD1 B, CD2B) and a photosensitive material transport unit, in which both the outside unit and the inside unit are so shaped as to be a complementary figure with each other and the inside unit can position in the outside unit. The photosensitive material transport unit having a plurality of rollers (R,r) for transporting the photosensitive material in a sandwiching manner there between. The plurality of rollers are divided into two groups of which the first group (R) is provided to the outside unit and the second group (r) is provided to the inside unit. The inside unit can be pulled out with the second group rollers from the outside unit.