Hi I am from Pakistan and i want to go hongkong for 3-5 days do i need a visa. plz tell me ?

Yes, you need to apply one. The following documents will be needed: the application form (ID 1003A), your recent photo affixed on the application form, photocopy of your passport, photocopy of your financial standing proof (bank statements, saving accounts passbooks, tax receipts, etc.) and employment proof (if any) (e.g. salary slip), photocopy of your transportation arrangement proof, photocopy of the proof which can justify your visit purpose.