The invention discloses a browser and a method for achieving adding and displaying of web image comments. A comment adding method includes that image comment contents and image comment position information are obtained, and relative coordinates between the image comment position and a fixed reference point in an image are calculated; and comment parameters including the relative coordinates, the comment contents and image identity (ID) are uploaded to a web server, and a comment information layer formed by using the comment parameters is post-positioned on an image layer. When users enter a web page, the browser requires the web servo to display the comment information, and after absolute coordinates of the image comment position are calculated, the formed comment information layer is arranged on the image layer to be displayed. Under the condition that the page is stationary, sticking type of comments are made on a certain local part of an image, the comments are vivid and interesting and have good effects especially on comments of comic products, and a user adhesion degree of internet products is improved.