The invention discloses a continuous casting technology suitable for chamfering crystallizer stable production and belongs to the technical field of steelmaking-continuous casting. The technology comprises the steps of respective setting of narrow face taper values according to steel types, stipulation on the relative positions of a foot roller and a crystallizer lower opening copper plate, stipulation on an angle seam value minimum value, stipulation on a connecting arc between a crystallizer and casting machine 0 and 1 sections, stipulation on the using cycle of the crystallizer, stipulation on the 0 and 1 section off-line detecting cycle and stipulation on the returning-to-plant repairing cycle of the crystallizer narrow face copper plate. Through optimization of the chamfering crystallizer continuous casting technology, the occurrence rate of chamfering base angle longitudinal cracks is lowered, the service life of the chamfering crystallizer copper plate is prolonged, and stable and long-service-life production of the chamfering crystallizer can be achieved.