To provide a method for constructing an earth retaining wall, which hardly causes damage to a heat exchange pipe annexed to the earth retaining wall.

This method for constructing the earth retaining wall includes: a soldier beam erection step of erecting a plurality of soldier beams; an excavation step of excavating the section between the adjacent soldier beams among the plurality of erected soldier beams by a predetermined depth; and an installation step of installing horizontal sheathing and the heat exchange pipe between the adjacent soldier beams and on the excavated side.