Background & objective: The survival rates of high-risk infant have been improved as a result of advancesin medical knowledge, but future development of these children is becoming a matter of concern. Afterinfection and trauma, developmental and behavioral problems are the most common problems in pediatrics. Arange of factors are involved in behavior and development problems. Given the importance and prevalence ofdevelopmental disorders, the lack of detailed information on risk factors, this article aims to explore somefactors associated with developmental delay in children.Method and Material : This review was performed by searching PubMed, Ovid, SID, Scopus, Magiran andScience Direct databases using following key words: Child Development, Socioeconomic statue, Violence,Social support, Psychological factors, Unhealthy behavior, Social Determinants. A total of 55 article wereincluded in this review .Results: The main causes of developmental disabilities remain unknown. Development of children affectedby prenatal factors, psychological, social and biological factors, genetic, environmental factors and is dynamicinteraction Biological and Acquired factors.Key words: Developmental delay- Risk factors - Socioeconomic risk factors -Biological risk Factors-environmentalrisk factor
