.ics文件是:iCalendar is a computer file format which allows Internet users to send meeting requests and tasks to other Internet users, via email, or sharing files with an extension of .ics. Recipients of the iCalendar data file (with supporting software, such as an email client or calendar application) can respond to the sender easily or counter-propose another meeting date/time.[1]iCalendar is used and supported by a large number of products, including Google Calendar, Apple Calendar (formerly iCal),[2] GoDaddy Online Group Calendar,[3] IBM Lotus Notes,[4] Yahoo! Calendar, Evolution (software), eM Client, Lightning extension for Mozilla Thunderbird and SeaMonkey, and partially by Microsoft Outlook and Novell GroupWise.简单的说就是可以加入到电子日历中,根据那个文件名,就是你火车的时间,方便你加入自己的行程日历中去的。 可以直接忽略掉,没有用。