Want to take my father for treatment to a kidney hospital in china

Hi, Masih Tamim,you need to apply a F Visa. You two both need the following documents:
1.your passports with a validity of at least 6 months and two blank pages
2.V2011A
3.Two Recent photos
4.Invitation letter from the hospotal
5.Other documents may be required by the consular officials, like the banking statement, round trip tickets, and so forth.

Good luck with you visa application, and hope your father recover soon!