An objective of the present invention is to provide a device for separating larvae and excrement soil which can automatically separate larvae and excrement soil mixed in a breeding container. The device for separating larvae and excrement soil comprises: a main body of a box structure having an outlet formed on a lower end thereof while an upper end thereof is opened； a feeding hopper which is connected and installed on the front side of an upper end of the main body, and supplies larvae and excrement soil in a mixed state to the front side of the upper end of the main body； a belt conveyor which is installed on an upper end in the main body, and transports the larvae and the excrement soil supplied from the feeding hopper from the front side of the upper end of the main body towards a rear side of the upper end of the main body； a sealed container which is installed on an outer side of the main body to enclose the main body in a sealed state, and has a box structure having a larva storage container and an excrement soil container connected and arranged on a lower end thereof； an air discharge unit which is connected to the sealed container, and reduces an amount of air supplied to the larvae in the sealing container while discharging air in the sealing container to the outside to stimulate the larvae to move； and a larva separation passage which is coupled to both sides in the main body to be arranged on both sides of the belt conveyor, and guides the larvae escaping to both sides of the belt conveyor by movements of the larvae to slide to the larva storage container through the outlet when the air discharge unit discharges air from inside the sealed container to the outside.본 발명은, 상단을 개방된 상태로 하단에는 배출구가 형성된 박스 구조의 본체, 본체의 상단 선측에 연결 설치하며, 본체의 상단 선측으로 혼합상태의 분변토와 유충을 공급하는 투입호퍼, 본체 내 상단에 설치하며, 투입호퍼로부터 공급되는 분변토와 유충을 본체의 상단 선측에서 본체의 상단 후측 방향으로 이송되게 하는 벨트컨베이어, 본체를 밀폐상태로 둘러싸도록 본체 외측에 설치하며, 하단에는 유충저장통 및 분변통저장통이 연결 구비된 박스 구조를 가지는 밀폐통, 밀폐통과 연결되며, 밀폐통 내측의 공기를 외부로 배출되게 하면서
