Now a days, Bitcoin transfer takes too much time..
I don't understand this why this happen.
Yesterday , I transfer my bitcoin from one account to other it takes almost 2 hours to display in my account..
This is too much time taken now...
This is very unusual right now. If you posted this a few months ago I would understand, but bitcoin transaction are quite decent again, both in speed and fee. The mempool is practically empty with an average of 7k unconfirmed transactions, so even if you don't pay fees to be in the first block, you shouldn't way much more than 20min to 30min for confirmation. Maybe you did something wrong. What wallet are you using?