The category of children in difficult situations covers the age bracket from 6 to 15 years and concerns in particular children living away from their biological family and orphans who, according to UNICEF, are the most vulnerable.
处境困难的儿童，其年龄段涵盖6至15岁，特别涉及到离开其生物学家庭生活的儿童，以及根据联合国儿童基金会的定义属于最脆弱的孤儿。