The utility model relates to the technical field of electrician equipment, and discloses a low-voltage distribution box which comprises a case body, an incoming circuit breaker and outgoing circuit breakers, wherein a left separator plate and a right separator plate are arranged in the case body and divide the case body into three cavities. A three-phase bus is fixed in the right cavity through a bus clip, the outgoing circuit breaker is arranged under the right cavity, and the incoming circuit breaker is directly connected to the bus through the incoming conductor. A plurality of outgoing circuit breakers are arranged in the middle cavity, and the outgoing circuit breakers are directly connected to the bus through the outgoing conductors. Outgoing cables are arranged in the left cavity, and connected to the outgoing circuit breaker. The incoming circuit breaker is directly connected to a mother board, which facilitates connection, and saves conductors used for connecting.