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'//div[@class="btn"]//span'?text()ofspanmay be the quote sign case the problem?find_element_by_link_text(u'确定')like that, and yes, they are Chinese characters, weird, though.find_element_by_xpath(u'//div[@class="btn"]//span[text()="确定"]')and it worked. You should answer this problem so that I can accept it :-)