The invention discloses a 3D animation production and display method based on power-grid 3D digital earth. The method comprises the following steps that 1) according to power-grid animation content to be produced, a state matrix is used to record the camera state of the 3D digital earth in the power-grid 3D digital earth, and the camera state of the 3D digital earth includes discrete information points that record position and attitude of a camera; 2) the discrete information points are edited, and the sequence of the discrete information points is determined according to the power-grid animation content to be produced; 3) an interpolation method is used to order the discrete information points, and continuous state matrix coordinates slerp are generated; 4) the rendering speed of animation is determined, a preview animation is obtained and stored, and animation play scripts are formed in memory; and 5) an animation play module reads the animation play scripts, drives the 3D digital earth to play content of the scripts via a scripting language, and the power-grid animation content is displayed.