A killing-bug apparatus is utilized for a closed space. The killing-bug apparatus includes an initiation module for generating an initiation signal a temperature sensing module, coupled to the initiation module, for measuring a measurement temperature according to the initiation signal a temperature control module, coupled to the initiation module and the temperature sensing module, for processing an elevating temperature operation for the air in the closed space according to the initiation signal and the measurement temperature and a circulation module, coupled to the initiation module, for processing a circulation operation according to the initiation signal, to accelerate a circulation flow of the air in the closed space for elevating an actual temperature of the closed space, so as to kill at least one hidden bed bug deeply concealing inside the closed space.一種除蟲裝置,用於一密閉空間,該除蟲裝置包含有一啟動模組,用來產生一啟動訊號;一溫度感測模組,耦接該啟動模組,用來根據該啟動訊號,以量測一測量溫度;一溫度控制模組,耦接該啟動模組與該溫度感測模組,用來根據該啟動訊號與該測量溫度,以對該密閉空間之空氣進行一升溫操作;以及一循環模組,耦接該啟動模組,用來根據該啟動訊號來進行一對流操作,以加速該密閉空間之空氣流動來提高該密閉空間內之一實際溫度,進而殺死藏匿於該密閉空間深處之至少一床蝨。10‧‧‧除蟲裝置100‧‧‧啟動模組102‧‧‧溫度感測模組104‧‧‧溫度控制模組106‧‧‧循環模組