The invention belongs to the technical field of building wood structures and discloses a wood-like double-beam type stairway structure and a manufacturing method thereof which are suitable for wood residences and public buildings. A stairway stair section is composed of double oblique beams and box-shaped step parts, the portions, below a starting stair section, of the double oblique beams need tobe supported on foundation beams, and other remaining portions of the double oblique beams are supported on stair beams. Middle platforms and storey platforms of a stairway are dense rib plates, andplatform beams and the stair beams are supported on stair columns and frame columns. All stairway components are manufactured in a factory with plant fibers or saw dust as a main raw material and thenmounted on site through special connecting pieces, wherein the box-shape step parts and the double oblique beams are connected in a nailed mode, and the other remaining components are connected in abolted mode. The stairway has the advantages that the raw materials are wide in source, environment friendliness is achieved, the assembling extent is high, corrosion and fire prevention is achieved,the construction speed is high, and the manufacturing cost is low.