美国签证如何每年更新？
谢邀~ 我来分享一下我的经验吧，我是在2016年7月签的B1/B2 10年的旅游签。当时和女朋友一起去签的，我在北京她在西安。
先说说我当时准备的材料：
1.护照原件(有旧版有新版)
2.两份旧版的DS160表格（官网下载）
3.两张5x5白底的彩照
4.签证费收据小纸条+缴费回执单
5.户口本全本复印件及翻译件
6.结婚证复印件+翻译件
7.银行对账单打印件+存款证明原件
8.在职证明原件+英文翻译+公司营业执照副本复印件+公章
9.机票预订单
10.酒店预订单
11.行程安排
12.房产证复印件+车辆行驶证复印件+个人名下股票交易记录+税单打印件+社会保险缴纳证明
当时我因为已经结婚了所以就多准备了一些材料~下面是我在面签时跟签证官讲的内容：
“Good morning， madam visa officer！ My name is XX and I am from China.” “Welcome to the United States of America！ Please sit down at this desk." "I have already filled out DS-160 form two years ago when I was in college， but my old passport will expire soon so I had to fill it again with a new passport number. The original one has been returned back to me by US Embassy in Beijing. Here are them both." (然后我把新旧两个护照给他看并且把两本护照上的签证贴都给他看了下让他确认我是持两个不同护照号码的同一个人的身份来的) ”The old one still has not expired， so why did you apply for another one？ Is there any problem with your old passport？ Or does it look different now than before because maybe you got married after that time or something like that？ Because usually people get married later in life rather than during their teens and twenties. So do I need to make some changes on the information shown on those visas？ Do they all belong to me？ Does each one represent an individual trip abroad？ And please don't give me bad news about the first visa which is expired since long ago cause I didn't know anything what happened then until today...." 签证官笑了一下说 no problems here， just relax！ Then he asked if I could speak English well since most Chinese students go to high school where they only learn three years of English instead of four as in U.S.A. 所以我就跟他用了英语对话： 然后他就让我把证件资料都放在他面前桌上，问我这次去是干嘛。我说是因为之前我女朋友在美国所以我去那边玩并且看望她，现在她已经回国了所以我再去美国需要再次申请签证。 他看了我的材料之后问为什么我只给了三个月的逗留时间而女朋友的却是十六个月，我跟他说因为我当时是学生没有工作而且也没有那么多钱能支持我呆那么久的时间所以就只给三个月，现在我工作了又有钱了所以才再次申请签证希望可以给我十六个月的停留期以便于我可以更长时间陪她在那边生活。他又问那如果到时候你经济能力不够怎么办或者她离开了我怎么办。。。balabala之类的。。。然后就问我去那边住哪啊吃啊行啊之类的问题，最后让我签字走人。
PS：其实签证官最在乎的就是你去那个国家干吗以及你有没有足够的能力去实现你的计划而不是你在那边认识谁这样。