VISA REQUIREMENTS FOR SWITZERLAND AND LIECHTENSTEIN
All persons holding a valid national passport and a valid Dutch „Vreemdelingendocument“/„verblijfsvergunning“ (Type A, C, D) or a „verblijfsdocument“ (Type I or II), do not need a visa to enter Switzerland for tourist purposes (for a stay of up to 90 days).
Holders of a Dutch "Traveldocument“ (refugees) instead of a valid national passport however do need a visa.
留学生的都是verblijfsdocument, Type I. 所以可以不用申请签证,在瑞士停留90天以下。