Abstract: A container house having a reinforced insulation property, comprising: a plurality of first spacing members (20) welded to a side wall (13) inside of a container body (10); a plurality of second spacing members (30) welded to a ceiling (14) inside of the container body (10); a plurality of first insulation panels (40) coupled to the first spacing members (20) so as to form a first interval space (D1) between the first insulation panels and the side wall (13); a plurality of second insulation panels (50) coupled to the second spacing members (30) so as to form a second interval space (D2) between the second insulation panels and the ceiling (14); and a plurality of finishing panels (60) attached to the surfaces of the first and second insulation panels (40,50).