Sudden infant death syndrome (SIDS) is a phenomenon of unknown cause among infants between 1 month and 1 year of age". Methodology: descriptive design conducted through September 2018 to the end of March 2019, mothers attended health centers in Al-Hilla City,who consists of (120 meters). Data were collected through using SIDS_QA-508 after doing some adjustment on the questionnaire, The questions that used in collecting data were checked out for any mistake or error and scrutinized, Data of the 120 participant's were entered and analyzedby means of the statistical package for social sciences (SPSS) .The results indicated that the children age (65.0%) was less one year aged, (41.7%) mother's educational attainment with primary school. (94.2%) with pre-term pregnancy, (74.2%) were married, (77.5%) from the population present their satisfaction concerning monthly income and (55.0%) had health problems through their pregnancy. Most mothershave low knowledge regarding abrupt baby death, which correlated for mother's age, sources of knowledge as weak correlation. Recommendations: Hospital staff should instruct parents who, in turn, must emphasize to secondary caregivers that the baby must always be placed to sleep on the back and never on the tummy, since prone sleep increases the risk of SIDS.

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