目的 探讨学龄前儿童头颅磁共振成像检查前心理准备游戏的设计与实践效果。 方法 选取2021年4月—7月在浙江省某三级甲等儿童专科医院放射科进行非镇静下头颅磁共振成像检查的220例3~6岁学龄前儿童，家长同意参加心理准备游戏的110例患儿入试验组，家长不同意参加的110例患儿入对照组。比较两组儿童检查的一次通过率和麻醉或镇静使用率。 结果 试验组检查一次通过率93.6%（103/110），对照组为79.1%（87/110），差异具有统计学意义（χ²=9.881，P=0.002）。试验组的麻醉或镇静使用率4.5%（5/110），对照组为20.9%（23/110），差异具有统计学意义（χ²=13.259，P<0.001）。 结论 头颅磁共振成像检查前心理准备游戏可有效提高学龄前患儿的检查一次通过率，同时可减少镇静或麻醉药物的使用率。

Objective To design and explore application effect of psychological preparation play for preschool children before cranial MRI examination. Methods A total of 220 preschoolers aged 3~6 years who underwent non-sedative cranial MRI examination in the radiology department of a class A children’s hospital in Zhejiang Province from April to July 2021 were selected as participants. Among them，110 children whose parents agreed to participate in the psychological preparation play were enrolled in the experimental group，and 110 children whose parents disagreed to participate were classified into the control group. The first pass rate and anesthesia/sedation rate were compared between the two groups. Results The one-time pass rate of test group of 93.6%（103/110） was higher than that of control group（79.1%，87/110），and the difference was statistically significant（χ²=9.881，P=0.002）. The utilization rate of anesthesia/sedation in the experimental group of 4.5%（5/110） was lower than the demand rate of sedation was lower than that in the control group（20.9%，23/110），and the difference reached statistically significant（χ²=13.259，P<0.001）. Conclusion The application of psychological preparation play before cranial MRI examination can significantly improve the pass rate，and can reduce the use of sedation/anesthesia medications among preschool children.