The present disclosure provides an array substrate including a flexible substrate. The flexible substrate includes a display area and a bending area on a side of the display area. The bending area is provided with first traces, an insulating layer, buffer strips, a sealing layer, and second traces. The first traces are disposed on the flexible substrate at intervals. The insulating layer covers the flexible substrate and the first traces and is provided with a groove on each of the first traces. The buffer strips are respectively filled in the grooves. The sealing layer covers the insulating layer and the buffer strips to seal the buffer strips in the grooves. The second traces are disposed on the sealing layer at intervals. Projections of the second traces coincide with projections of the first traces on the flexible substrate. The present disclosure further provides a method for fabricating the array substrate.