The invention belongs to the technical field of display panel defect detection and discloses a rapid and automatic exposure graph and a generation method thereof. A first limited area is taken in a graph region, multiple graph blocks are taken in the first limited area, four characteristic graph blocks and at least three gray scale graph blocks are taken from multiple graph blocks, different characteristic graph blocks are respectively filled by different characteristic colors, different gray scale graph blocks are respectively filled by different gray scale colors, different numbers of identification blocks are respectively taken in three characteristic graph blocks, identification colors fill the identification blocks, and a first comparison color fills in an unlimited region. The rapidand automatic exposure graph disclosed by the invention solves the problem that display panel automatic exposure time complexity is relatively high in the prior art, camera exposure parameters of allthe to-be-detected pictures can be predicted by virtue of one graph, an automatic exposure effect can be achieved at one time, operation speed is high, real-time performance is strong, and the time complexity can be reduced.