Why do you use the most inappropriate forum for this question?
There is a General and Beginner Basics forum, both would have been reasonable choices.
One also expects some level of effort to understand the topic prior to asking questions so recommended reading includes:
https://wiki.mikrotik.com/wiki/Manual:Interface/VLAN
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1