NOVELTY - The method involves performing (S20) first aerobic aeration process in fermenter of excrements host processing field to activate microorganism. The first anaerobic fermentation process is performed (S30) by injecting large amount of air in aeration tank of excrements host processing field and causing aerobic metabolism of microorganism while increasing the decomposition of excrements and biomass of microorganism. Second aerobic aeration process is performed (S40) in fermenter of excrements host processing field to activate the microorganism.    USE - Seasonally-hogs excrement disposal and circulation method using ferment system.    ADVANTAGE - The administration of the microorganism can be facilitated in spite of the temperature change according to the season. The process efficiency of the excrements using the microorganism can be regularly maintained. The death percentage of pig can be reduced and the excrement handling cost can be reduced. The chemical expense including all kinds of the antibiotics can be reduced.    DETAILED DESCRIPTION - The method involves performing (S10) attribute decomposition fermentation process by injecting large amount of air in aeration tank of excrements host processing field and causing aerobic metabolism of microorganism while increasing decomposition of excrements and biomass of microorganism. Germ group bacterial culture solution is injected through aeration tank of excrements host processing field and microorganism is inoculated with supplement.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the seasonally-hogs excrement disposal and circulation process. (Drawing includes non-English language text)    Step for performing attribute decomposition fermentation process by injecting large amount of air in aeration tank of excrements host processing field and causing aerobic metabolism of microorganism while increasing decomposition of excrements and biomass of microorganism (S10)    Step for performing first aerobic aeration process in fermenter of excrements host processing field to activate microorganism (S20)    Step for performing first anaerobic fermentation process by injecting large amount of air in aeration tank of excrements host processing field and causing aerobic metabolism of microorganism while increasing the decomposition of excrements and biomass of microorganism (S30)    Step for performing second aerobic aeration process in fermenter of excrements host processing field to activate the microorganism (S40)    Step for performing second anaerobic fermentation process by injecting large amount of air in aeration tank of excrements host processing field and causing aerobic metabolism of microorganism while increasing the decomposition of excrements and biomass of microorganism (S50)