The invention discloses a movable electric power system. The whole movable electric power system is divided into two transport tools, effective integration is achieved, and the number of the transporttools and transport cost are decreased. Through side connection of the two transport tools, fast and convenient connection in the working state is achieved, and the needed installation time is greatly shortened. By arranging a gas turbine starting device on a gas exhaust auxiliary transport unit, a gas turbine can be started when the whole movable electric power system is blacked out.