Thousands of Syrian refugees flee to escape IS militants
22 September 2014 Last updated at 19:56 BST
The Turkish government says more than 130,000 Syrian refugees. many of them Kurds, have crossed the border over the last three days, fleeing from Islamic State (IS) militants.
Many have witnessed terrible violence and say its no longer safe to stay.
Temporary refugee camps have been set up at the border to try to cope with the numbers.
Mark Lowen has been speaking to some of the refugees arriving on Turkey's border with Syria.