Please apply online first and make an appointment for an interview.
Https://csts.immigration.gov.tw/HKMO/home/index website
You need to take the documents with you during the interview:
1. Reservation confirmation form.
2.2 x 2 inch color photo (background must be white).
3. Original and photocopy of mainland passport (valid for more than six months).
4. The application qualification meets one of the following requirements:
A. Permanent residency: the original green card and its front and back copies.
B. Living abroad for more than one year with a work visa and holding a work certificate. : original and photocopy of H 1B/ L 1 visa and I-797A/I-797B, and employment certificate (full-time employee, entry date and title must be indicated). Applicants who have worked and lived for less than one year can only apply for an entry-exit permit once.
C. Holding student visa: original and photocopy of F 1 visa and I-20, and proof of studying (must be full-time students). If the applicant is about to graduate and loses his status as an international student, he can only apply for a single entry and exit permit.
D. Hold student visa OPT: F 1 visa, original and photocopy of I-20 and EAD card, and employment certificate (when to start work and title must be stated).