This creation system provides a kind of pest-catching device, include an ontology and a trapper, the ontology includes one first accommodation groove, an aspirator and a load-bearing part, the aspirator is set in what first accommodation groove, the load-bearing part sets one of what first accommodation groove wall surface, and between the first notch of one of the position what aspirator and first accommodation groove, the trapper includes one second accommodation groove and a sensor, second accommodation groove is connected to first accommodation groove, the sensor is set in what second accommodation groove, and is electrically connected the aspirator. Thereby, user's alternative determines the mode used, and unlimited what can only select slaughter or capture alive completely Deng simple functions, and function, which integrates Hou also, can reduce the cost of purchase device.本創作係提供一種捕蟲裝置,包含一本體及一誘捕器,該本體包括一第一容置槽、一抽風器及一承載件,該抽風器設於該第一容置槽內,該承載件設於該第一容置槽之一壁面,並位於該抽風器及該第一容置槽之一第一槽口之間,該誘捕器包括一第二容置槽及一感測器,該第二容置槽連通該第一容置槽,該感測器設於該第二容置槽內,並電性連接該抽風器。藉此,使用者可選擇性決定使用之方式,而不限於只能選擇完全撲殺或活捉等單一功能性,功能整合後亦能降低購買裝置之成本。