How can i apply visit visa for hongkong?

Hello, Nar, you should first prepare relevant application materials: the application form attached with a passport-style color photo, your passport and copy of its data page, your residence permit or work permit in USA, transportation arrangement such as flight itinerary, as well as your travel itinerary to HK and the financial support proof. Afterwards, post the above-mentioned materials to HK Immigration Department directly to apply for it.