The invention discloses an array substrate easy to measure TFT feature, comprising scanning lines, data lines, insulation layer, pixel electrode and sealing frame glue. Each corner of the array substrate display area is respectively provided with one additional pixel electrode, and two additional scanning lines and two additional data lines. An additional measuring wire is provided on one side of the pixel electrode. The additional pixel electrode provides a connection lug to one side of the additional measuring wire and the connection lug partly overlaps with the additional measuring wire. All the six additional wires are electrically connected with measuring blocks which protrude outside the sealing frame glue. The array substrate directly measures the TFT feature of the additional pixel electrodes of the four corners of the panel display area through ITO measuring block electrically contacted with the additional wire directly using prod without removing panel, and the proper backlight source irradiation is given to keep the present of the liquid crystal box, therefore the credibility of measuring result is increased.