NOVELTY - Device (I) for providing microbial culture for processing sludge or waste water, continuously or regularly, has unit that provides culture medium liquids, pumps that suck up each culture liquid medium, to each of several culture medium layer, several culture medium layers being provided with microorganisms adsorbed to ceramic, for carrying out cultivation of microorganisms, and pumps to provide culture to sludge.    USE - (I) is useful for adding and providing necessary amount of microbial culture for processing target being sludge or waste water, continuously or regularly (claimed). (I) is useful in water treating unit for processing sludge emitted from food processing factory.    ADVANTAGE - (I) enables continuous production of microbial culture that consists of microorganisms required for processing waste substances, inexpensively, rapidly and conveniently, and thus continuously or regularly provides microbial culture to the water-treating unit.    DETAILED DESCRIPTION - Device (I) for adding and providing necessary amount of microbial culture for processing target being sludge or waste water, continuously or regularly, comprises unit that adds microbial culture continuously or regularly and provides culture medium liquids with respect to bacteria or fungi, to each of several culture medium layer; pumps that suck up each culture medium liquid or liquid that have been obtained by ejection, for culture medium layer; several culture medium layers being provided with bacteria, hyphae or resistant bacteria adsorbed to ceramic, and culture liquid medium for carrying out cultivation of microorganisms in suitable environmental condition, where the bacteria, hyphae or resistant bacteria can process organic matter and compound contained in the sludge; and pump that sends the microbial culture to the sludge or waste water treating unit. (I) enables treatment of sludge based on the residence-time zone or pollution state of the sludge that has been accumulated, other than the operating time. (I) provides necessary amount of microbial culture for treating target being sludge or waste water, continuously or regularly, as the processing of sludge containing organic matter generated from water treatment and other polluting compounds, carried out using microorganisms, is ineffective due to mixing of surface active agents used by washing, disinfection, sterilization, etc, regularly and by outflow of lot of sludge during operating time.