To study the protective effect of intelligent integrated child safety seat for children occupants, frontal crash sled tests are conducted using Q6 ATD dummy with intelligent safety seat plus three schemes of safety belt use:correct use of four-point safety belt and three-point safety belt, and misuse of four-point safety belt. The injury situation of child dummy is assessed by various injury criteria defined in regulations. The results show that the protective effects of the correct use of four-point safety belt and three-point safety belt meet the requirements of regu-lations, and the protection performance of three-point safety belt is superior to that of four-point safety belt with in-adequate tension. Finally improving measures are put forward for enhancing the restraint effects of four-point safety belt based on test situations.%为研究智能集成式儿童安全座椅对儿童乘员的保护效果，采用Q6 ATD 6岁儿童假人开展了正确使用四点式安全带和三点式安全带，以及误用四点式安全带3种情形下的正面碰撞台车试验，通过法规中要求的各项儿童假人的损伤指标来评定儿童假人损伤情况。结果表明，正确佩戴四点式安全带和三点式安全带时座椅的保护效果满足法规要求，佩戴三点式安全带的保护性能优于松弛状态下四点式安全带。最后根据试验情况提出了提高四点式安全带约束效果的改进措施。
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