The manuscript was a study on positive effects of peer relationship in middle childhood. It was conducted at shitimali basic school in Chilubi Island in Zambia. The positive effects discovered through this study were the development of social skills, intimacy relationship, sense of belonging, motivation, leadership, cooperation, learning different roles of life, learn rules and obey them, develop language and communication skill, physical development, being competitive, develop self-concept, self-identity and self-esteem, they compare themselves with others, opening up new perspective in life and cognitive development.