This creation is the mosquito catcher that one kind can prevent mosquito escape,It includes a cylinder,Set fan has a support surface in seat cylinder,It is provided with a pedestal below what seat cylinder,It is provided with a water conservancy diversion in what pedestal and blocks mechanism； The water conservancy diversion block mechanism include a vortex pedestal,One spring element and a block device； The suction inlet of a longitudinal direction is equipped at the vortex base central,The block device has a baffle,The block device can be acted on by spring element with often mobile towards suction inlet direction,The support surface of the what fan is supported on the block device top,Make to form open shape between the baffle and suction inlet； By the pedestal by removing Hou on seat cylinder,By the effect of what spring element,The baffle mobile closed suction inlet,Mosquito is avoided to be escaped by suction inlet,Mosquito will not escape causes user to perplex to interior,With using upper convenience.本創作為一種可防止蚊蟲逃逸之捕蚊器，其包括有一座筒，座筒中所設風扇具有一抵頂面，於座筒下方設置有一底座，於底座中設置有一導流阻斷機構；該導流阻斷機構包括有一渦旋基座、一彈力件及一阻斷器；該渦旋基座中央處設有一縱向之吸入口，該阻斷器具有一擋片，該阻斷器可由彈力件作用以經常朝向吸入口方向移動，該阻斷器頂端抵頂於該風扇之抵頂面，使該擋片及吸入口間形成開放狀；將該底座由座筒上取下後，由於彈力件的作用，該擋片可移動封閉吸入口，避免蚊蟲由吸入口處逃逸，蚊蟲不會逃逸至室內造成使用者困擾，具有使用上之便利性。
