The current study drives at exploring the relationship between patterns of environmental socialization and the socio-psychological adjustment as a comparative study between one slum area and another planned one. The researchers defines the sample as consistent of (270) items, divided equally into males and females, in primary stage, who are registered in grade (four-five& six), in the age stage (9-12 year olds) in late childhood stage. The sample is selected randomly. The researchers uses the (descriptive) method, applying these scales: scale of Socialization styles As Perceived by children (by Prof. Elhamy Abdel Aziz) – Scale of Children Socio-psychological Adjustment (by Amany Abdel Maksoud & Israa Abdel Maksoud) – Primary Data Form (by researcher), to be administered on male/female students in governmental schools and language formal schools following Misr El-Gidida and Hadayek El-Kobba Educational Directorate, Cairo governorate. Data are processed using T.Test, for exploring individual differences – Averages- Standard Deviation – Pearson Coefficient Correlation, coming to these results: There is a significant statistical correlation between patterns of environmental socialization and the socio-psychological adjustment of late childhood stage (male/female) children, regarding the sample of the slum area. There is a significant statistical correlation between patterns of environmental socialization and the socio-psychological adjustment of late childhood stage (male/female) children, regarding the sample of the planned area. Study Recommendation: Inviting the civil society to fulfill its duty towards holding educational programs for recently married parents to be able to full their tasks. The necessity to activate the tasks of Ministry of Environment to consider various environments and how to set plans to terminate slums and provide people humanitarian housing.