When baby arrived will marriage life change ? What can we do to keep the marriage goes on like what we use to have ..

Yes, it will change because the priorities are different when baby arrive. All focus and attention will be towards baby rather than ownself and partner. When times move on, both of you will adapt to the new responsibilty. It is good if you can have babysitter or parents/parents in law to help occasionally, so both of you can catch for a date time.