JPEG2000 is a new image coding standard and system. A client side cache model is defined in JPEG2000 Part 9 - Interactivity tools, APIs and protocols (JPIP). The JPIP standard does not define how the client side and the server side internally keeps track of the client side cache. In this paper we propose XML based JPIP client side cache model management. We propose to use XML for JPIP client side cache model management because XML is standardized and easily exchangeable approach. Since the JPIP cache model descriptors follow hierarchical structure, this can be very well represented using XML. Using our proposed approach, the client and/or server side can use XML DOM API to easily add, delete, and update its cache model view of the client cache. We define a XML DTD and Schema for the proposed XML based client side cache model management.