The invention discloses an angle measuring method and device, a terminal and a storage medium, and belongs to the technical field of terminals. The angle measuring method is applied in the foldable terminal, in an angle measuring mode, a screen of the terminal is unfolded or folded based on a received angle measuring indication signal, the angle measuring indication signal includes an unfolding angle measuring indication signal and a folding angle measuring indication signal, when it is detected that two half screens of the screen are parallel to two edges where the angle to be measured is located respectively, the folding angle of unfolding or folding the screen currently is determined, and the determined angle is displayed on the screen based on the angle of the angle to be measured based on the folding angle. In this way, angle measurement can be achieved without an extra angle measuring tool, and the terminal is small in size generally and therefore is convenient for a user to carry; the terminal measures the angle automatically, and errors between the measured angle and the actual angle due to manual operation and other factors are avoided.