Infants in the study group were provided with all supportive cares required for rehabilitation.CDCC intelligence scale was used to test for the intelligence.

• 干预组早产儿出生后即提供发育支持护理，接受早期环境干预和综合康复功能训练，定期随访，对照组仅接受常规治疗及定期评估，用CDCC婴幼儿智能量表进行评估。