Early Childhood Education (ECE) comprises of essential programs and activities that are critical to holistic development, academic success and future achievements of children. The purpose of this study was to investigate the challenges faced by the teachers in implementing early childhood education in primary schools. The descriptive research design was used. All the primary schools located in Lahore district was the population of the study. A sample of two hundred ECE teachers was selected randomly from the population. The sample consisted of one hundred male and female teachers from rural and urban primary schools. There was a questionnaire developed for data collection. The findings of the study revealed that most of the teachers were not completely aware of the early learning development standards. Materials related to ECE classrooms were not enough for the students. Moreover, primary school teachers need more training and facilities for the implementation of ECE in their schools. There was a significant difference between the perception of the male and female and rural and urban teachers. In light of the findings, researchers recommended that teachers’ training should be arranged for awareness of early learning development standards and pedagogical skills.