The invention discloses a nano-photocatalyst bacteria clearing and smell removing air circulator which comprises a bottom shell, a panel, a fan, a main control board and a nano-photocatalyst bacteria clearing and smell removing device, wherein the bottom shell is provided with an opening, and an air inlet is formed in the circumferential wall; a fan bracket is arranged at the center of the roof of the bottom shell; an air outlet is formed at the center of the panel; the fan is arranged on the fan bracket; a flow guide gap is reserved between the fan and the roof of the bottom shell; and the nano-photocatalyst bacteria clearing and smell removing device is arranged in the bottom shell and surrounds the fan. Due to the structure, the nano-photocatalyst bacteria clearing and smell removing air circulator is fixed on a wall or ceiling for use and thus is convenient to mount; and in work, indoor air enters in the circumferential direction and is ejected from the panel to realize air circulation for disinfection, sterilization and smell removal.本發明揭露一種奈米光觸媒清菌除味空氣循環機,包括底殼、面板、風機、主控板和奈米光觸媒清菌除味裝置,該底殼具有開口、周向壁上設有進風孔,底殼的頂板的中心設置有風機支架;該面板的中心部位設置有出風孔;該風機設置在風機支架上,風機與底殼的頂板之間有導流間隙;奈米光觸媒清菌除味裝置設置在底殼內並環繞風機設置。由於採用這樣的結構,使用時,固定在牆壁上或天花板上即可,安裝方便;工作時,室內空氣從周向進入,從面板上噴出,對空氣迴圈消毒殺菌除味。