The invention relates to the field of design of stairways, in particular to a manufacturing method for a solid-wood stairway. The manufacturing method for the solid-wood stairway comprises the following steps of measurement and design, manufacturing of a handrail, manufacturing of a guardrail, manufacturing of treads, overall treatment, and field assembling, specifically, parallel through grooves are evenly formed in the lower surface of each tread through a grooving cutter, then mao bamboo is selected, peeled and pushed into a dicing saw, and regular bamboo battens with rectangular sections are discharged out of the dicing saw; then the bamboo battens are baked at a high temperature and cut into bamboo chips with the same length after being naturally aired; the bamboo chips are embedded into the through grooves, fibers on the bamboo chips are perpendicular to the surfaces of the treads, and connecting parts are reserved after the bamboo chips are embedded into the through grooves; and through holes allowing the guardrail to penetrate through are drilled in the treads. By the adoption of the manufacturing method for the solid-wood stairway, the technical problems that an existing solid-wood stairway is prone to cracks in the positions of mortises of a handrail after being scrubbed with water repeatedly, and knocking noise is too high when people walk on treads are solved.