To facilitate a core extracting work so as to reduce a cost by reducing the size of a mold formed part at the ends of a weather strip.

A clip hole 14 and a core hole 17 provided in a mold formed part 3 which is formed integrally with an extrusion formed part 2 are formed on different installation surfaces 11 and 12 so as to prevent the core hole 17 from being damaged when a core is removed from a mold. Because the clip hole 14 and core hole 17 are arranged generally in the same position in the longitudinal direction of the mold formed part 3, the mold formed part 3 itself can be reduced in size and a cost can be reduced. In addition, because the core hole 17 is increased in size, a deforming work can be performed easily.