To solve the problem of the conventional photograph processing apparatus in which: a large scale photograph processing apparatus needs to be installed for printing photographs in large quantity, and, in a case in which a plurality of small scale photograph processing devices called as mini-laboratories are installed instead of the large scale photograph processing apparatus requiring huge investment, an individual control of the photograph processing device degrades workability.

In a photograph processing system comprising a plurality of photograph processing devices, a photograph processing liquid tank for supplying photograph processing liquid to be supplied to each photograph processing device is connected to each photograph processing device processing liquid tank by a pipe. While each photograph processing device processing liquid tank is not individually controlled, the supply of photograph processing liquid is controlled by detecting a liquid level in the photograph processing liquid tank for supplying the photograph processing liquid. Also, waste liquid discharged after a photosensitive material is processed, is guided into an external waste liquid treatment device tank through a waste liquid discharging pipe inclined in the gravitational direction so that the waste liquid flows down by the weight thereof. Moreover, a control line for a control unit is arranged in a ceiling section to facilitate work on a floor level.