organic fertilizer that produces the system for producing organic fertilizer from livestock or domestic animal excrement using housefly larvae [problem] to provide an efficient system for making an organic fertilizer base material that reduces manual work involved in the treatment of manure from domestic musca lavas. [solution] An organic fertilizer production system is provided for producing organic fertilizer from livestock excrement using the domestic musca larvae. The organic fertilizer production system is configured as follows: a first crop processing housing unit is provided for cultivating hatched egg larvae； a second crop processing housing unit is arranged which is divided into a plurality of sections below the first crop processing housing unit； a fall portion is provided which allows the larvae to fall using the fact that the larvae creep； an organic fertilizer base is manufactured by letting the larvae fall from the fall portion to the next stage of the second crop processing housing unit and repeating this process several times, and in each of the housing processing units. cultivation processing, the excrement is enzymatically hydrolyzed within the larvae during the larval cultivation process and is subsequently excreted by the larvae； an organic fertilizer base gathering unit that gathers and discharges the organic fertilizer base material and a larval gathering unit that gathers the crawl and fall group of larvae from the final section of the unit housing processing processing； and the organic fertilizer base and larvae group are discharged.fertilizante orgânico que produz o sistema para produzir fertilizante orgânico a partir do excremento de gado ou animal doméstico usando-se larvas de musca domestica (mosca-doméstica) [problema] proporcionar um sistema eficiente para fabricar um material de base de fertilizante orgânico que reduz o trabalho manual envolvido no tratamento de esterco de gado lavas de musca domestica. [solução] proporciona-se um sist
