To provide an inexpensive press fitting structure of a steering column with a simple constitution without finishing capable of restraining loads from increasing on a joint face of a column and a press fitting part.

In this press fitting structure of a steering column, a tip end of a column 20 holding a steering shaft is press fit/innerly or outerly fitted with a press fitting part 3 installed to a gear box 1. At least one of the press fitting part 3 or the column 20 is coupled under a partial contact condition having a tubular variant cross section. The cross sectional shape includes a polygonal shape, a shape having a plurality of long axial projections 31a in a peripheral direction, or a cylindrical shape having recessed grooves 23a correspondingly fitted with the projections 31a in a peripheral direction.