Any parent wishes an appropriate development for their children. One of the parents' great concerns is the children's speech development; they are worried if their children are late to speak. The children's speech development is influenced by physical and environmental factors. The causes of physical factors are related to the problem but the role of environmental factors is more complex because it involves the educational role of the family as a starting point of the children's ability to speak. The children's speech delay is viewed from environmental factors which are based on the role of parents in training the children's speech ability including insufficient time parents and children spent together, lack of understanding of developing children's potential, and parents' speaking style following the child's speech style. Speech delay in children will affect other aspects of their development if it is not properly handled.