The present invention relates to a method and apparatus for establishing a label and style rule binding relation and belongs to the technical fields of a computer. The method comprises: acquiring an HTML file to be matched and a CSS file to be matched; according to an atom selector which each selector in the CSS file comprises, partitioning each selector into a plurality of selector classifications; and traversing labels in the HTML file and for each traversed label, if determining that a first selector classification corresponding to the label exists in the plurality of selector classifications according to a label name, a label attribute and a corresponding attribute value, which the label comprises, searching a first selector matched with the traversed label in the selectors which the first selector classification comprises and establishing the binding relation of the traversed label and a style rule to which the first selector belongs. By adopting the method and the apparatus, matching efficiency of the labels and the style rules can be improved.