Background: First-Aid is the assessments and interventions that can be performed by stander (or by the victim) immediately with minimal or no medical equipment. Training is necessary to equip the First-Aid provider with the knowledge, skill and confidence to attend to an emergency. Objectives:-to assess the knowledge and practices of primary school teachers in catchment area of Hay Al-Salaam Al-Sakani PHC about the First-Aid. Method: Cross section study with analytic element, conducted in Baghdad during the period from February - august 2018. Eight schools out 23 schools, were choose randomly, 145 teachers who were work in choosing schools and accept to involve in this study. A structure questionnaire depending on The Iraqi Red Crescent guideline for First-Aid, and American college of emergency physician's First-Aid manual 5th edition; were used. Data entered statistical analysis and coding done. Result:145 teachers involved in this study, 64(44.1%) aged 40-49y, most of them females (93.8%), graduated institute (63.4%), married (77.9%), had1-3 child, (65.5%), job teaching (87.6%), had 11-18y experience (30.3%). the most teach material was Arabic, and only 44 (30.3%) applied First-Aid previously, most of the teachers 104(71%) do not involved in First-Aid training courses. teachers age had statistically significant with First-Aid general knowledge, knowledge about poisoning, fractures and burn(0.004, 0.009, 0.032, 0.012 respectively). Their educational level had statistically significant with knowledge about coma/epilepsy, fractures/teeth and burn. (P=0.031, 0.003, 0.008 and 0.023) respectively. Conclusion: In spite of that their knowledge about the First-Aid in general and in each type of accident (which can be occurring in the school) was good knowledge except in asphyxiation and electric shock were fair knowledge; Most of them not involve in First-Aid training courses, and did not applied any of First-Aid