我现在刚回国一周，就把护照丢了，上面有还没到期的H1B签证。也想过要再到领事馆重新签一个，可以时间不够，而且还很有可能被CHECK。
请问老师，我可不可以跟领事馆要求补一个签证呢？
-Yes.
需要多长时间？如果这个办法行不通，有没有其他办法？
-You need to get a new passport and then go to the US Consulate in China to get the visa repalcement.
The following link is some related information from the US DOS. Although it is related to the loss of passport/visa within US, the principle can still be used in your case outside US.
http://travel.state.gov/visa/temp/info/info_2009.html#6
Here are some links for the people in other coutries who had the same experience with you and you can google to find more:
http://www.sukh-dukh.com/forums/showthread.php?t=321
