Abstract: According to the features of mobile devices, a font structure and an outline algorithm for stroke font are proposed.The font structure based on stroke font and Chinese character components contains the index, structure and components vector information of characters, has advantages of small font ROM size and fast speed of character synthesis.It also solves the distortion problem in former researches.The algorithm can confirm the outline of polygon by only once traversal according to the stroke segments and optimize the vertices number of the generated polygon.On the other hand the algorithm considers the abnormal conditions during traversing process and reduces the burden of rendering.The algorithm can also become a common stroke algorithm by a little changes.The final simulation tests show good results in mobile devices.