To provide the method and apparatus for solidifying extrusion molding which improves molding speed.

In a solidifying extrusion molding method, the surface temp. of a molten crystalline resin is lowered to crystallizing temp. Tc°C or lower at the leading end part of a die, and a resin surface layer is solidified before the molten crystalline resin is extruded. The molten resin is held to a temp. range exceeding Tc°C and lower than (Tc+15)°C for a definite time before a resin surface layer is solidified. In a solidifying extrusion molding apparatus having a molten resin extruder and a die having a cooling zone 1 provided to its leading end part, the cross-sectional area of a part 6 of the resin flow passage in the cooling zone 1 of the die is smaller than that of a molded article.