PROBLEM TO BE SOLVED: To provide an underground heat collection pipe installation tool and an underground heat collection pipe installation method for easily installing a header joint in the vicinity of the ground when burying a plurality of sets of underground heat collection pipes.SOLUTION: An underground heat collection pipe installation tool comprises a pipe holding part 13 for forming a first insertion hole 10 and a second insertion hole 11 for juxtaposing and inserting a plurality of tubes 3A and 3B when installing a plurality of sets of underground heat collection pipes of setting the two tubes 3A and 3B of a forward passage and a backward passage as one set in an excavation hole formed in the ground with the axis as the vertical direction and an installation part 14 for installing the pipe holding part 13 in an upper end opening part 7t of the excavation hole.SELECTED DRAWING: Figure 3
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