A system and method for adaptively locating dynamic web page elements. The system includes an XPath refiner for refining an XPath path expression of the web page element based on an HTML knowledge database describing HTML tag relationships and attribute importance; and an enhanced XPath resolving engine, for searching an HTML DOM tree of the target web page for the web page element through the refined XPath path expression. The invention can locate required Web contents in dynamic web pages in spite of the variety of web contents by using an HTML knowledge database. Also provided is a computer readable article of manufacture embodying computer readable instructions for executing the above method.