Embedded browsers are designed for customized systems to provide web page browsing function for users and have the characteristics of small volume, little resource consumption and high efficiency. These browsers are compatible for network transmission protocols such as HTTP, WAP and etc. and network markup languages such as HTML, JavaScript, XML and etc. Tailored and modified browsers are suitable for various embedded systems, as well as fitting the requirements of users for acquiring information. Language analyzing for HTML is the core technology in browsers and the analyzing result concerns the browsing efficiency. To understand the design process of embedded lexical analyzer to further address the issues of this field, we accomplished the design of lexical analyzer for embedded browser on the platform of ARM2410-S, a platform for embedded system development, and we made cross compilation on PC platform to generate the binary file suitable for ARM structure, then transplant it onto a development board to finish the lexical analyzing function for embedded browser and obtained satisfying result.