A pillar ramp structure for preventing interference of a curtain air-bag is provided to prevent the curtain air-bag from being abnormally exploded into a pillar trim due to deformation of the pillar trim in vehicle collision. A pillar ramp structure for preventing interference of a curtain air-bag includes a pillar ramp housing(10) and a folding bracket(20). The pillar ramp housing is fixed on an inner panel. One end of the folding bracket is installed at a front surface of the pillar ramp housing, and the other end extends to a pillar trim. The pillar ramp housing includes a plate part(12) and a connector(14). The plate part includes a hook portion, which is engaged with one end of the folding bracket. The connector is installed at a lower side of the plate part such that the folding bracket is installed at the connector. A slit(12a) is formed at an upper surface of the plate part. A fixing member(5) is installed in the inner panel through the slit.
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