A guide anchor for a seat belt, and a method for manufacturing the same are disclosed. The guide anchor comprises a guide plate having a latching hole and a slide guide hole formed therein, a guide piece engaged with a lower circumference of the slide guide hole, and a first molded part for coupling the guide plate and the guide piece. The guide piece comprises a cover, and a second molded part injected into a lower surface of the cover. The second molded part has a recess formed in a longitudinal direction at a lower surface. The cover has cover eaves extending from a lower portion.