The first problem of stokes is a kind of common problem in the industrial production field. Traditional similar solution to the first problem of stokes is abstract and beyond understanding. Matlab PDE toolbox can vividly describe the first problem of stokes , output the concrete numerical value of research and vividly show the motion state of some plane. Matlab PDE toolbox provide an intuitive, quick, accurate and vivid numerical solution for the research of viscous flow of outside pipe's fluid medium.