To constitute a developing processor that shortens a waste time when a photosensitive material is conveyed by a turn unit by eliminating the trouble that a processing liquid is carried in a processing tank from a precedent processing tank while sticking on a photosensitive material.

The developing processor is equipped with a crossover rack 35 which sends a photographic paper P lifted from the surface of a liquid in the precedent processing tank into the following processing tank, and the crossover rack 35 comprises an introduction path X for lifting the photographic paper P from the precedent processing tank, a drooped path Y for lifting the photographic paper P from the introduction path X after sending it downward, and a discharge path Z for sending the photographic paper P from the drooped path Y downward to send it into the following processing tank, and is equipped with a nozzle N which jets a washing liquid or a processing liquid to the introduction path X or discharge path Z.