The invention relates to a method and a device for switching transverse and vertical screens. The method comprises: acquiring a holding angle; judging whether the holding angle is in a preset transverse screen angle range or a preset vertical screen angle range or not; determining a screen switching mode according to a preset holding touch determining mode if the holding angle is not in the transverse screen angle range and is also not in the vertical angle range. According to the method disclosed by the invention, the situation of firstly judging whether the holding angle is in the preset transverse screen angle range or the preset vertical screen angle range or not, and then determining the screen switching mode according to the preset holding touch determining mode if the holding angle is not in the preset transverse screen angle range and is also not in the preset vertical angle range can be realized. Compared with a mode for determining just according to the holding angle and the preset angle range in the prior art, the transverse and vertical screen switching mode is more precise, and the using habit of a user can be more accorded, so that the switching accuracy is increased, and the user experience is increased.