Odontogenic infections are infections originating from the teeth or the supporting tissues of the teeth. This infection can spread to the alveolar processes, the deeper tissues of the face, oral cavity, head, and neck. Infections that spread to a child's facial area can progress rapidly, producing significant systemic symptoms, such as fever, malaise, dehydration, dysphagia, and respiratory distress. The purpose of this case report is to describe the management of odontogenic infection of primary teeth in child that extends to the submandibular and submental spaces. Case Report:A 5-year-old boy patient came to the Emergency Department of Hasan Sadikin Hospital Bandung with complaints of swelling in the right submental and submandibular for seven days. The patient complained of toothache, fever, and trismus. The diagnosis of this case was submandibular abscess extending to the submental area due to dental infection 85.. Patient care includes administering Ceftraxone inj 325 mg IV, Metronidazole inf 170 mg IV, Paracetamol inf 195 mg IV, tooth extraction 85, drainage incision through and through the right mandibular to submental, and installation of a Penrose drain. Conclusion:Odontogenic infections in children can originate from primary teeth and can extend to the maxillofacial space. Prompt and appropriate treatment of severe odontogenic infections in children needs to be done to prevent further complications