I had take medicine of anti-depression (zoloft (sertraline) ) for many years , but recently i have stopped the medicine for two month, if is there any risk ?

Hard to say: One risk for someone stopping their antidepressant medication is that the person could become depressed and even suicidal. That would clearly be the greatest risk. There are no real medical problems which would be a threat from stopping zoloft (sertraline). Often, patients say that stopping a medication like this abruptly causes a feeling as though they are receiving an electric shock that lasts a few days.

Monitory yourself: for recurrence of depressive or anxiety symptoms.