The present invention provides a visualization method based on quartile graph display data, the method comprising: the step of defining a data grid (Gx) and determining the display scale of the X axis; the steps of data source configuration, scanning, and reading; the step of analyzing stored data and correcting the X axis to display the scale, and calculating the quartile of the data in each data grid (Gx) of each scale level; the step of using a quartile graph to display the data. By means of defining a data grid (Gx) to store data, the four display scales of the X axis being interchangeable, and using a quartile graph to display data, the present invention displays the distribution of two-dimensional data in extremely large-volume data or big data environments, and provides interactive functionality. The present invention also provides a visualization system based on quartile graph display data.