The invention discloses a method for replacing a stacker-reclaimer rotation crossed bearing. The method includes the following steps that (1) stacker-reclaimer positioning is conducted; (2) jacks and jacking platforms are manufactured and installed; (3) positioning shafts and positioning sleeves are installed; (4) the part above the rotation crossed bearing is jacked up; (5) the old rotation crossed bearing is removed; and (6) a new rotation crossed bearing is installed. The method for replacing the stacker-reclaimer rotation crossed bearing is high in efficiency, short in period, low in cost and high in safety coefficient.