Expandable container house

The utility model discloses an expandable container house, which comprises a container house body and an expansion mechanism, and belongs to the technical field of container houses. The purpose of keeping the expansion box smooth in the moving process is achieved through the arrangement of the sliding wheels and the sliding assemblies, and when the internal space of the container house body needs to be expanded, a hand wheel is screwed to enable a threaded rod to rotate in a threaded groove; the threaded rod drives the expansion box connected with the fixing plate to move in the container house body in the horizontal direction, the expansion box moves towards the end away from the interior of the container house body, and the expansion box and the fixing plate are more stable in the moving process through the action of the sliding rod and the spring till the expansion box is completely expanded. And the sealing hinge plates on the expansion box are rotated from the vertical direction to the horizontal directi