Exhibit 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the use in this Registration Statement of China Finance Online Co. Limited Form F-1 of our report dated June 11, 2004, appearing in the Prospectus, which is part of this Registration Statement. We also consent to the reference to us under the headings "Selected Financial Data" and "Experts" in such Prospectus. /s/ Deloitte Touche Tohmatsu CPA Ltd. Deloitte Touche Tohmatsu CPA Ltd. Beijing, China September 21, 2004