The invention provides an outdoor vacuum circuit breaker. The outdoor vacuum circuit breaker comprises a closed housing, three vacuum tubes, an operating mechanism, a line outgoing terminal and a line incoming terminal, wherein the three vacuum tubes are arranged in the housing; the operating mechanism is arranged in the housing and used for breaking and closing; the line outgoing terminal is conductively connected with one of the ends of the vacuum tube and extends to the outer part of the housing; the line incoming terminal is conductively connected with the other one of the ends of the vacuum tubes and extends to the outer part of the housing; insulating sleeves sleeve the line outgoing terminal and the line incoming terminal; mutual inductors sleeve the insulating sleeves of the line outgoing terminal and/ or the line incoming terminal in the housing. According to the outdoor vacuum circuit breaker, the housing is filled with inert gas, the mutual inductors are arranged in the housing and prevented from being influenced by the outdoor environment, and thus the service lives of the mutual inductors can be effectively prolonged.