The present invention discloses a method and an apparatus for rendering fonts of a user interface, both of which can establish a font cache table to cache fonts needed to be rendered, searches a font needed to be rendered in the font cache table and returns that font, and renders the founded font needed to be rendered. The method and the apparatus of the present invention pre-cache the fonts needed to be rendered by establishing the font cache table, so that the font rendering efficiency of the user interface can be improved significantly, especially the fluency of a dynamic user interface (such as sliding of user interface, dragging of icon) which contains plenty of font rendering is not reduced following the plenty of font rendering. In addition, the present invention further proposes a font supplementary scheme and a maintenance scheme of the font cache table, so as to make the present invention have more practical value.