The invention discloses a method and a device for displaying an E-mail and belongs to the field of mobile terminals. The method comprises the steps of obtaining the page file of the E-mail to be displayed and the screen width of a display screen used for displaying the page of the E-mail, wherein the page file of the E-mail to be displayed comprises mail content; determining the scaling of the page of the E-mail to be displayed according to the page file and the screen width; sending the page file of the E-mail to be displayed and the scaling to a browser, and displaying the page of the E-mail to be displayed by the browser according to the scaling. The device comprises an obtaining module, a determining module and a sending and displaying module. The scaling of the page of the E-mail to be displayed can be more precisely determined by combining with the page file of the E-mail to be displayed, the displayed page of the E-mail is suitable for the screen width, and the display effect is good.