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High-quality cardiopulmonary resuscitation is a significant factor for increasing the survival rate of paediatric patients. This study is to investigate the effectiveness of finger-marker stickers for maintaining the correct compression point during simulated infant cardiopulmonary resuscitation (CPR).This crossover simulation study was conducted with 40 emergency physicians and paramedics at emergency departments of 2 tertiary hospitals. We used a remodeled infant CPR manikin developed to measure CPR quality indicators. After random coupling of participants (20 pairs), the pre-group (10 pairs) performed conventional 2-rescuer infant manikin CPR, then performed sticker-applied CPR after 1 month. The post-group (10 pairs) performed the process in the opposite order. The participants placed finger-marker stickers to indicate the appropriate compression point before starting CPR. We compared accurate finger placement rates and other CPR quality indicators (compression depth, rate, complete chest recoil, and hands-off time) with and without the finger-marker sticker.All finger-marker stickers were correctly attached within 5 s (4.88 ± 1.28 s) of approaching the model. There were significant differences in the rate of correct finger compression position between conventional and sticker-applied CPR (25.4% [IQRs 7.6–69.8] vs. 88.2% [IQRs 69.6–95.5], P < 0.001). Results did not differ according to sex, career, and job of the participants. There were no significant differences in mean compression rate, depth, hands-off times, and rate of fully recoiled compression between the 2 groups.Finger-marker stickers can be used to maintain correct finger positioning during 2-rescuer infant manikin CPR.