To improve support efficiency and construction efficiency of linear members by increasing the occupation area of linear members temporarily supported by one support device used to array at predetermined intervals linear members to be constructed in a construction region sectioned with a frame material at intervals in a width direction.

A linear member holding support device includes a plurality of support members 2 which are mounted at intervals in axial directions of a plurality of linear members 5 constructed in a construction region at intervals in a width direction, and have support parts 3 temporarily supporting the plurality of linear members 5, the support parts 3 are arrayed at intervals in the axial directions of the support members 2 as many as at least the product of the number (n) of sections obtained by sectioning the construction region into a plurality section regions adjoining in the width directions of the linear members and the number M of linear members constructed in one section region, and an interval L between material axes of every other or every plurality of two linear members 5, 4 being temporarily supported on the support members 2 by the support parts 3 is held at an interval L between material axes of linear members 5, 4 adjoining in a construction state in the construction region.