An automatic photosensitive material developing machine supplies a solid processing solution to be dissolved according to consumption of processing solution for a silver halide photosensitive material to be treated. The developing machine includes a solid processing solution supplying section for supplying the solid processing solution from a solid processing solution cartridge containing the solid processing solution, and a solid processing solution transferring section for receiving the solid processing solution supplied by the solid processing solution supplying section in a bucket, and for transferring the bucket upward.