Expansion external connection structure of reinforced portable computer

The utility model discloses an expansion external connection structure of a ruggedized portable computer in the technical field of ruggedized computer expansion, which comprises a ruggedized computer main body, an external connection assembly is arranged on the ruggedized computer main body, the external connection assembly comprises a first fixing plate, one side of the first fixing plate is provided with a through hole, and the through hole is communicated with the first fixing plate. According to the ruggedized computer, when the ruggedized computer is used, the first fixing plate and the second connecting plate are fixed to the two sides of the ruggedized computer body, the first docking station and the second docking station can be installed in the through holes and the penetrating holes formed in the ruggedized computer, and the protection effect can be achieved; and the two groups of second fixing plates are fixed in the through holes, so that a protection effect can be achieved, and external impuritie