The utility model discloses a double-pipe steam injection pipe column for a horizontal well, which comprises an inner steam injection pipe column and an outer steam injection pipe column, wherein the inner steam injection pipe column extends from the vertical well section of the horizontal well to the horizontal well section of the horizontal well, and comprises an inner steam injection passage; an inner steam injection screen pipe is connected to the inner steam injection pipe column in a position at the tail end in the horizontal well section; an inner pipe screwed plug is connected to the tail end of the inner steam injection screen pipe; the outer steam injection pipe column is sleeved on the inner steam injection pipe column; an annular steam injection passage is formed between the outer steam injection pipe column and the inner steam injection pipe column; a vacuum heat insulation oil pipe, an oil pipe, a first outer steam injection screen pipe and a second outer steam injection screen pipe are connected to the outer steam injection pipe column on the section from a wellhead to the tail end of the horizontal well section sequentially; the first outer steam injection screen pipe is arranged on the horizontal well section in a position near the vertical well section; the second outer steam injection screen pipe is opposite to the inner steam injection screen pipe; and the tail end of the second outer steam injection screen pipe is connected with the outer pipe screwed plug. Through the adoption of the double-pipe steam injection pipe column, uniform steam suction of the horizontal well is realized, the oil layer at the tail end of the horizontal well section is fully used, and the productivity and the recovery efficiency of a thick oil horizontal well are improved.