Turkish aid workers have been setting up tents and distributing supplies for thousands of new Syrian refugees kept from entering Turkey at the border.
Some 35,000 people fled a Syrian government offensive in the Aleppo area last week, trying to enter Turkey's Kilis border region.
The EU is also giving mixed messages, calling one day for Turkey to allow in those fleeing persecution but the next voicing frustration that Turkey is not doing enough to stem the refugee flow to Europe.
In the past few days, the Syrian army - backed by Russian air strikes - has made a series of gains around Aleppo, Syria's largest city.
Aid officials at the Oncupinar border crossing told Reuters news agency their efforts for now were focused on getting aid to the camps on the Syrian side of the border.
"We're extending our efforts inside Syria to supply shelter, food and medical assistance to people," an unnamed official from the Turkish Humanitarian Relief Foundation said.