Ludwig咽峡炎又名Genoul氏病,是小儿感染性气道阻塞的罕见病因。现报道1例。患儿男,9岁。2天前诉咽部疼痛,迅速发展为吸气性呼吸困难,不能进食。在当地医院用青霉素治疗一天,未见缓解。因呼吸困难逐渐加重,咽拭子涂片查见“白喉杆菌”,以喉白喉、Ⅲ°呼吸困难收入本院。体检:体温38.7℃,咽红,咽扁桃体Ⅱ°肿大,表面粘液性分泌物,未见伪膜,口唇及四肢发绀,呼吸60次,有明显三凹征。心率160次。两肺呼吸音减弱,无干湿性罗音。患儿无声音嘶哑。颌下略显肿胀,似有牛颈样表现。行气管切开术,术中由切口内吸出腐败物及部分脓液,其中无伪膜。插入气管导管后,患儿呼吸迅速改善,紫绀消失,呼吸及心率明显 Ludwig angina, also known as Genoul’s disease, is a rare cause of obstructive airway obstruction in children. Is reported in 1 case. Children male, 9 years old. 2 days ago vomit pain, rapid development of aspirated breathing difficulties, can not eat. In the local hospital with penicillin treatment for one day, no relief. Gradually aggravated by dyspnea, throat swab smear check “diphtheria bacilli” to laryngeal diphtheria, Ⅲ ° breathing difficulties income in our hospital. Physical examination: body temperature 38.7 ℃, throat red, swollen pharynx Ⅱ °, surface mucinous secretions, no pseudomembranous, lips and limbs cyanosis, breathing 60 times, there are obvious signs of three concave. Heart rate 160 times. Breathing lung sounds weakened, no wet and dry rales. Children without hoarse voice. Submandibular slightly swollen, like a cow-like performance. Tracheotomy, intraoperative aspiration from the incision and some of the pus, no pseudomembranous. After insertion of the tracheal tube, children’s breathing rapidly improved, cyanosis disappeared, breathing and heart rate significantly