How to solve separate anxiety disorder for my 2 years old twin boys?

You can take a look at these two articles: https://thestoryteller.me/2009/01/21/separation-anxiety-in-twins/ http://www.mytwinlink.com/public/Separation_Anxiety_for_Twins.cfm The main thing a parent can do is to highlight the individuality of each twin, to point out to them that they are unique as individuals. This may help minimize their dependency on each other. That being said, according to both articles,separation anxiety is common for children below the ages of 3 and one need not be overly concerned about it. Hope those articles help!