According to UK-based Centre for monitoring human rights in Syria, the blow was struck on Thursday afternoon at the camp near the town of Sarmad in the province of Idlib.
Accurate information about the number of victims yet, but activists say killed at least 30 people, dozens more were injured. It's unclear exactly who made an air strike.
Civilian targets in Syria regularly come under fire of aircraft of various countries.
So, in February, the victims of air strikes in five medical facilities and two schools in the North of Syria were about 50 people.
Responsibility for the bombing in different cases pinned on the Russian, American and Syrian planes.
From the 27th of February in Syria, an agreement on the ceasefire, which not only applies to groups deemed terrorist by the UN security Council.