I want to have milk from my friend ,so how to get &how can I try to get it.is there any tecnic manually or I have to go by medicin.
It's called induced lactation and it is a very involved process. If she isn't adopting or being a wetnurse for a baby I don't recommend trying to mess with mother nature though.
Here is a website that you can read more about it.
http://mamadearest.ca/en/info/newman/induced-lactation.htm