An array substrate and a method for detecting the array substrate are disclosed. The array substrate comprises a display area and a detecting area. In a first detecting mode, a first to a sixth detecting circuits are divided into three groups, and a first detecting signal is successively provided to these three groups of detecting circuits, so that a circuit defect possibly existing in a charge line and a share line that are located in each row of subarea can be detected. In a second detecting mode, the first to the sixth detecting circuits are divided into two groups, and a second detecting signal is provided to the two groups of detecting circuits successively, so that a circuit defect possible existing in the charge line and the share line that are located in adjacent rows of subareas can be detected.