Animation is widely used in landscape design,digital media design,film and television post-production,visual communication design,product design and other fields.Based on the current mainstream computer software and post-animation software,the animation discussed in this paper specifically refers to computer animation,while traditional frame-by-frame animation and stop-motion animation are not within the scope of this paper.At pres-ent,keyframe animation,a basic and widely used tool,is widely used in various design works to achieve dynamic effects.The main content of this paper is to briefly analyze some shortcomings of the current widely used keyframe animation.At the same time,combined with the author's own understanding and summary,the expression animation is pro-posed as a solution,aiming to make the animation production process more efficient and achieve richer visual effects.