A picture rendering method includes obtaining first picture data of a current frame; comparing the first picture data with currently recorded second picture data of a previous frame to determine a first part in the first picture data that does not change with respect to the second picture data and a second part in the first picture data that changes with respect to the second picture data; and rendering the second part in the current frame, including reusing a rendering result of the first part in the previous frame to obtain and display a rendering result of the current frame.