You need the documents below；
1.Application for Entry for Visit in Hong Kong (ID 1003A).
2. Your recent photograph (affixed on page 1 of the application form ID 1003A)
3. Photocopy of the Your travel document containing personal particulars, date of issue, date of expiry and/or details of any re-entry visa held (if applicable).
4. Photocopy of proof of the your financial standing, e.g. bank statements, savings accounts passbooks, tax receipts, etc. and proof of employment (if any), e.g. company leave letter, salary slips, etc.
5. Photocopy of proof of transportation arrangement, e.g. flight itinerary
6. Photocopy of proof of the proposed visit to Hong Kong (for purposes of visit other than leisure, transit, business or family visit).