Deep neck infection is an infection in the potential spaces and fascial planes of the neck, either with abscess formation or cellulitis. In the preantibiotics era most cases of deep neck infection were secondary to an oropharyngeal infection. Moreover, today manupulation of intubation tube and gastroenteroscopy may cause deep neck infection by iatrogenic trauma. We experience 1 case of deep neck infection which originate from pharyngeal penetrating injury following gastroenteroscopy.