The present disclosure relates to an array substrate and a method for repairing an array substrate. The array substrate includes: a plurality of sub-pixels located on a substrate, each sub-pixel including a driving transistor and a light emitting device, a control electrode of the driving transistor being coupled to a data signal terminal and a first electrode of the driving transistor being coupled to a first voltage terminal, the light emitting device being connected in series between a second electrode of the driving transistor and a second voltage terminal, the sub-pixels including a first sub-pixel and a second sub-pixel adjacent to the first sub-pixel that emits light of the same color as that of the first sub-pixel; and a first repairing line insulated from and intersecting with a connection line between the light emitting device and the second electrode of the driving transistor of the first sub-pixel and a connection line between the light emitting device and the second electrode of the driving transistor of the second sub-pixel.