Abstract: In this paper we consider interface design of capacitive touch screen based on embedded,according to principle and function of the capacitive touch screen controller FT5202,we use S3C2410 as a host,and design the FT5202 hardware interface with S3C2410,to realize drivers of the S3C2410 access control FT5202,Experiments show that it is very effective through the test of scratches and picture scaling.