In Indonesia, the number of exclusive breastfeeding to the babies under age of 6 month in year 2016 was about 54,0% at Lampung Province and different with the babies under the age of 5 month was only 43,1%. One of the way to increase the production of milk from the mother was by doing Early Breastfeeding Initiation (IMD). The result of monitoring nutritional status (PSG) in year 2016, at Lampung Province there were about 48,5% babies exposed with early breastfeeding initiation, and it was under the average of national number. The quality of early breastfeeding initiation in Indonesia was low because from the achieving number of 51.9%, consist of 42.7% getting early breastfeeding initiation after an hour from baby’s delivering, and about 9.2% in an hour or more after the birth. The goal of the study is to find out the relationship between the using of turtle blanket to the baby’s behaviour of early breastfeeding initiation. This study is an experiment with True Experiment type and Post Test Group design. The population come from all normal babies borned by vaginal way out with 60 sample that divided into 2 groups, they are intervention group and control group. Bivariate analysis is using T Test independent test,  and multi variant test with Cohen’s Effect Size. The result of the study shows there is significant influence by the using of turtle blanket to baby’s behavior in it rest stadium with p-value is about 0.003, the time spent by baby’s moving to the mother’s breast with p-value about 0.004 early breastfeeding initiation, spending time for baby in getting mother’s nipple with p-value of 0.003, the length of the first baby’s breastfeed with p-value of 0.000. Meanwhile, the un-significant behavior come when the baby produce saliva with p-value 0.052. Effect size test of baby’s behavior that very related is the spending time by doing it first breastfeed with index of effect size for about 1.18 categorized in high standard. The suggestion come from the result of the study is, the health provider should socialize for using turtle blanket, especially for the newborn baby in their IMD time.