PURPOSE: To facilitate the installation of model layout by enabling a railroad model along a model rail installed on a slope by constituting the lintel railroad system supporter of L-shaped parts to be fitted onto walls or lintels and the slopes to be fixed by the L-shaped parts.

CONSTITUTION: This lintel railroad system supporter supports the fixture of the slopes to install the model rail on walls or lintel 5 in order to move the railroad model along the walls or lintels 5 of a room. Namely, respective slopes 1, 15, 7, 19 and 16 for linear shape, curved shape, high and low shapes, stretched shape and point are prepared as slopes. On the other hand, L-shaped parts 4 are prepared for fixing the respective slopes, and suckers to be sucked on the walls 5 or holding screws or the like to be held at the lintels 5 are respective added to these parts. Further, the respective slopes are connected to each other by connectors 2. Besides, corner boards 18 as tales for placing structure or the like are arranged at gaps generated between the corner parts of the room and the curved slopes 15. Thus, the layout of the railroad model is easily installed.