Foreign body (FB) aspiration occurs mainly in children under 3 years of age and is one of the most frequent causes of accidental death under 12 months of age. The increased risk of FB aspiration in children is due to the different structure of the pharynx and the upper airways compared to adults. In addition, children have an immature swallowing mechanism and they most commonly aspirate food stuffs. FB aspiration is usually a sudden and dramatic event when the child feels that he is suffocating or choking. After the acute event, the clinical presentation widely ranges from severe respiratory distress to the most minimal symptoms. Bronchoscopy is the best diagnostic and therapeutic modality for FB inhalation. Prevention and rapid diagnosis can be lifesaving. In 2010, the American Academy of Pediatrics published a position paper on prevention of FB aspiration. The association calls for more proactive preventative measures to protect children from FB aspiration and to prevent mortality and morbidity. These include: 1. Raising awareness of parents and caregivers to supervise children and create a safe environment for them. 2. Promoting legislation and enforcing regulations that will prevent dangerous products being sold for children. 3. Changing the design of products, especially food products and toys, that will reduce the risks of choking. In this overview we will show the principles of diagnosis of FB aspiration and a flow chart including when flexible or rigid bronchoscopy is required.