Integration of XML data is an increasingly important problem and many methods have recently been developed. In this talk, we examine the related and more challenging task of how to integrate XSLT programs. XSLT is a primary language for XML transformation. Program integration can be particularly important for server-side XSLT applications, where it is necessary to generate a global XSLT program, that is a combination of some initial XSLT programs and operates over a newly integrated XML database. This global program should inherit as much functionality from the initial XSLT programs as possible, since designing a brand new global XSLT program from scratch could be expensive, slow and error prone, especially when the initial XSLT programs are large and/or complicated. However, it is a challenging task to develop methods to support XSLT integration and a number of difficulties need to be resolved. In this talk, we report on our recent work, which aims to develop a novel framework for semiautomatic integration of XSLT programs. .