The present invention relates to a device for preventing pest and infection for a manhole, comprising: a container having an internal space, while having an injection hole on the top for inputting a liquid for preventing pest and infection, and an outlet on the bottom for emitting the same liquid a fixating unit formed and elongated upwards from the top of the container, for forming a holding bump on the top which penetrates the drainage of the manhole and is held onto the top of the manhole a pest-preventing hose connected to be funneled with the outlet of the container and to emit the liquid for preventing pest and infection supplied from the outlet toward the outside and an amount adjuster formed on the pest-preventing hose to pressurize the outside of the pest-preventing hose in order to adjust the size of the internal passage of the pest-preventing hose. By periodically emitting the liquid for preventing pest and infection filled inside the container through the pest-preventing hose connected with the outlet of the container using the amount adjuster into the sewer, the reduction in the effect of the liquid for preventing pest and infection due to the flow of the sewer can be prevented in advance, thereby effectively blocking the spawning of pests and outbreak of infectious diseases, leading to an excellent disease control inside the sewer. Moreover, since the container can be easily hung to the drainage of the manhole by the fixating unit and provides a continuous disease control by periodically refilling the liquid for pest and infection control through the injection hole of the container thereafter, user convenience and excellent disease control effect can be expected.COPYRIGHT KIPO 2016본 발명은 맨홀용 해충 및 전염병 방제장치에 관한 것으로, 그 구성은 내부에 공간을 가지되, 상부에는 해충 및 전염병 방제액이 유입될 수 있는 주입구가 형성되고, 하부에는 유입된 해충 및 전염병 방제액이 배출되는 배출구가 형성되는 용기와, 상기 용기의 상부에서 상방으로 연장 형성되는 것으로, 상부에는 맨홀의 배수구멍을 관통하여 맨홀의 상부에 걸리는 걸림턱이 형성되는 고정구와, 일단은 상기 용기의 배출구와 연통되게 연결되어 상기 배출구를 통해 공급되는 해충 및 전염병 방제액을 외부로 배출하는
