The present invention discloses a pest-killing device, which includes a body, a high-voltage generating circuit, an extension member, a plurality of conductive pins, and a button switch. The body has a holding portion. The high-voltage generating circuit is disposed in the body. The extension member is connected with the body. The conductive pins are arranged side by side on the extension member and extend to a side away from the body. The conductive pins are electrically connected with the high-voltage generating circuit. The button switch is disposed on the holding portion and is electrically connected with the high-voltage generating circuit. When at a first mode of the pest-killing device and the button switch is turned on, the output voltage of the high voltage generating circuit causes a high voltage difference between two adjacent conductive pins.本新型公開一種殺蟲裝置，包括一本體、一高壓產生電路、一延伸件、多個導電針以及一按鈕開關。本體具有一握持部。高壓產生電路設置於本體內。延伸件與本體連接。多個導電針並排設置於延伸件，並往遠離本體的一側延伸，該些導電針與高壓產生電路電性連接。按鈕開關設置於握持部，並與高壓產生電路電性連接；其中，在殺蟲裝置的一第一模式且按鈕開關導通時，高壓產生電路輸出電壓使兩相鄰導電針之間產生一電壓差。
