是不是在考虑应该什么时候申请学生签证呢？越早越好！我们不希望你因为太迟办理申请而错过了开学日期，但是请不要早于开学前的120天（4个月）哦！

Are you wondering when youshould apply for your student visa? Please apply as early as possible! We don’twant you to apply so late that you miss your program start date. You arepermitted to apply up to 120 days (4 months) before the start of your program.

来源：2017-06-16美国驻华大使馆美国驻华大使馆