Section 1187 . the united states currently issues ten - year multiple - entry visitor visas to qualified applicants , the maximum validity period available under u . s . law 美国目前向合格申请人签发为期十年的多次入境旅行签证，这是美国法律规定多次入境签证的最长有效期限。
The chinese ministry of foreign affairs has also agreed to reciprocally issue to u . s . citizens visiting china on temporary business and tourism visas valid for 12 months and multiple entries 基于互惠原则，中国外交部也同意为临时赴华从事商务和旅游的美国公民签发有效期为12个月的多次入境签证。
Proof of financial capacity through any one of the following documents for single entry visa applications , or any two of the following documents for multiple entry visa application 申请一次入境签证，需下列文件中的任何一条经济能力证明；申请多次入境签证，需下列文件中的任何两条经济能力证明；
Beginning january 15 , 2005 , eligible chinese nationals who wish to visit the united states temporarily for business ( b - 1 ) or tourism ( b - 2 ) will be issued visas that are valid for 12 months and multiple entries . the previous maximum validity for u . s . visas issued for these purposes was six months and for multiple entries 自2005年1月15日起，对希望持商务（ b - 1类）签证或旅游（ b - 2类）签证临时赴美的中国公民，如符合条件可签发有效期12个月的多次入境签证。
