需要。毕业参加OPT可以延长您地签证時间。12個月或29個月不等（architecture, engineering, mathematics, physical sciences, social sciences, biotechnology, medicine and health, education, law, accounting, business specialties, theology, and the arts, and requiring the attainment of a bachelor’s degree or its equivalent as a minimum，這些专业可以EXTEND 到29個月）

然後您可以申请H1B工作签证，可以由3年顺延6年 然後申请IMMIGRATION。