My book live MAC OS X wireless cannot detect only LAN can

I have use my mac book 1st time setup use LAN all done  . When unplugged use back wireless i cant find any Network Device at my Network place  ? When Connect to Lan can use well . Please Help !!

Hello and welcome, 

Be sure that your wireless and wired connections are part of the same network. 

i have connect with same network by wireless  . maybe is my mac wireless connection setting ? But i can Online with no problem just cannot wireless to my Book Live . Wired no problem . 

The MBL only works when connected to the router VIA LAN, which for there you can use wireless via the router. It does not work wirelessly on it’s own.