Method for automatically deleting dangling lines in PCB design

The invention discloses a method for automatically deleting dangling lines in PCB design, and relates to PCB design technologies. The method comprises: detecting a PCB subjected to layout and wiring; directly modifying a background database of Layout design by modifying partial configuration files of cadence Allegro software by using an extended Skill program interface provided by the cadence Allegro software to realize a necessary running environment; writing a common scheme for dangling line deletion into a Skill program; and directly selecting to-be-deleted dangling lines by using the Skill program, and highlighting and deleting the dangling lines. According to the method, the problem of conventional operation of viewing coordinates of the dangling lines and then manually deleting the dangling lines is solved, the redundant workload of engineers is reduced, and the Layout working efficiency is improved.