A　series　of　biological　drying　and　odor　emissions　experiments　of　municipal　solid　waste　(MSW)　was　made　by　using　independently　developed　biological　drying　device..　The　results　show　that:　Ventilation　increasing　contributes　to　the　loss　of　water　and　reduction　of　H2S　emission,　as　well　as　conducive　to　biochemical　reactions.　Additives　of　T2　and　T4　can　significantly　reduce　the　emission　of　H2S　and　additives　of　T2　and　T3　can　significantly　reduce　the　emission　of　NH3,　thus,　T2　can　preferably　chose　as　biodrying　deodorant.　Turning　process　has　a　certain　impact　on　the　biodrying　product　moisture　content,　moisture　content　decreases　with　the　increase　of　turning　times,　the　moisture　of　final　biodrying　product　reached　25%　when　turning　twice,　reached　22.5%　when　turning　3　times　and,　reached　19.1%　when　turning　4　times.　Thus,　increase　the　turning　times　can　significantly　reduce　moisture　content.