A system for displaying and managing information on a webpage using an indicator comprises an indicator displayed on a surface of specific contents of the webpage with reference to coordinate values corresponding to the specific contents and for classifying and elaborating on the specific contents; an indicator generation module for generating the indicator comprising a block setting portion for predicting a width of the specific contents, a coordinate setting portion for grasping the coordinate value of a webpage area corresponding to the specific contents, an input portion for inputting information to be recorded in the indicator, a storage portion for storing the coordinate value and an output portion for outputting the indicator to the specific contents based on the information stored in the storage portion; and an indicator database stored in the system server through the storage portion and collected according to a specific classification.