NOVELTY - Organic fertilizer fermentation producing negative pressure aeration deodorizing apparatus comprises materials processing system and gas processing system. The materials processing system comprises a workshop comprising blender, fermentation pool, and conveyer belt. The gas processing system comprises waste gas collecting pipe, waste gas conveying pipe, dehumidifier, reservoir, exhauster, and deodorizer.    USE - The apparatus is useful for preventing the outflow of bad smell.    ADVANTAGE - The apparatus effectively prevents the outflow of the bad smell, reduces the loss of the nutrition in organic solid waste, and reduces the breed of the harmful bacteria in a large amount.    DETAILED DESCRIPTION - Organic fertilizer fermentation producing negative pressure aeration deodorizing apparatus comprises materials processing system and gas processing system. The materials processing system comprises a workshop comprising blender, fermentation pool, and conveyer belt; the blender is set on materials put place in the workshop; the outlet of the blender enters into the fermentation pool; the other end of the fermentation pool is set with a conveyer belt. The gas processing system comprises waste gas collecting pipe, waste gas conveying pipe, dehumidifier, reservoir, exhauster, and deodorizer; the waste gas collecting pipe is set on the bottom of the fermentation pool; the waste gas collecting pipe is the collecting pipe net composed of collecting pipes; the waste gas collecting pipe is connected to the waste gas conveying pipe; the waste gas conveying pipe is connected to the dehumidifier; one outlet of the dehumidifier is connected to the exhauster; the bottom outlet of the dehumidifier is connected to the reservoir; the exhauster is connected to the deodorizer; the outlet of the deodorizer leads to the workshop.    DESCRIPTION OF DRAWING(S) - The drawing shows the front view of the organic fertilizer fermentation producing negative pressure aeration deodorizing apparatus.