wanted to know how can i groom my Lhasa aphso.his hair have become unmanageable?

Answer 1

Yes, if his coat is in poor condition you may need to have a groomer shave him down and start over.

Here are some links on grooming a lhasa apso:

http://www.el-minjas.com/grooming.htm

http://www.lhasaapso.org/Grooming/Grooming_Tips.htm

http://www.orlanelhasa.org/groom.htm

http://www.bootimer.glis.net/groom6/

Answer 2

If his fur is that tangled, you may want professional help. Good luck!