before I bulid light
https://www.mediafire.com/convkey/8213/8u72hhuh0g2huih4g.jpg
After
https://www.mediafire.com/convkey/f025/k01bwpwwvqc6k714g.jpg
thank you for everyone help 
Please use a better thread title.
You probably need to check your light map UVs and increase the light map resolution.
sorry, I need to create new post and new title ?
Most likely your lightmaps are overlapping
tips to enhance lighting