Precise circuit defect repairing method and device

The embodiment of the invention discloses a precision circuit defect repairing method and device. The precision line defect repairing method comprises the following steps: acquiring a line; performing defect detection on the line to obtain a detection result corresponding to the line after defect detection; based on the detection result, obtaining a defect type corresponding to a line defect in the line; based on a visual calibration method, determining coordinates of line defects; based on the defect type, obtaining a line width repairing mode corresponding to the line defect according to a current conduction preset condition, and obtaining a repairing spreading mode corresponding to the line defect according to a conduction capability stability preset condition; and based on the defect type and the coordinate of the line defect, calling a printing head to repair the line defect according to a line width repair mode and a repair spreading mode corresponding to the line defect to obtain a repaired line. Accor