The invention provides a digital steel bar bending method and system for plastic rockery stone steel bar mesh sheets. The digital steel bar bending method comprises the following steps: collecting project requirements through a touch screen; converting the project requirements to control instructions aiming at a numerically-controlled steel bar hoop-bending machine by the numerically-controlled steel bar hoop-bending machine by virtue of built-in software; and controlling a servo motor for each component of the numerically-controlled steel bar hoop-bending machine to bend steel bars on the basis of the control instructions, wherein the numerically-controlled steel bar hoop-bending machine comprises a horizontal straightening mechanism used for carrying out horizontal straightening on the steel bars, a traction part used for feeding and retreating the steel bars, a vertical straightening mechanism used for carrying out fine straightening on the steel bars, a bending mechanism used for carrying out forward and backward bending on the steel bars, a cutting mechanism used for cutting the steel bars, and a pneumatic part. The digital steel bar bending method and system realize human-computer interaction optimization for an interface, realizes rapid production for the steel bar mesh sheets, solves the technical problem of slow production for the steel bar mesh sheets, and achieves alarge bending length, high angle accuracy, and rapid bending.