Sir , my liver function test result shows that my bilirubin is 1.9 and sgpt 27 ,sgot 29 into weight traning but not gaining weight .current wgt 60.

Your liver function : Are basically normal, but you probably have Gilbert's syndrome which is harmless but elevates bilirubin. It is not the cause of not gaining weight. I assume your other bloodwork is all normal? Then it is a matter of needing more calories in than you burn . Keep a log of what you eat and your activities then you will know where to start adding your extra foods.