Active component array and detection method

The invention provides an active component array and a detection method. The active component array comprises a plurality of scanning lines, a plurality of data lines, a plurality of pixel structures, a first detection line, a second detection line, a third detection line and a fourth detection line. Each pixel structure is electrically connected with one scanning line and one data line, the first detection line is electrically connected with an odd number of scanning lines, the second detection line is electrically connected with the (4n+1)th scanning line, wherein n is 0 or a positive integer, the third detection line is electrically connected with an even number of scanning lines, and the fourth detection line is electrically connected with the (4n+2)th scanning line. The active component array and the detection method provided by the invention can be used for effectively detecting the defects in the line, thereby being beneficial to the improvement of the yield of the active component array.