Abstract： Solitary cervical submental nodule is a relatively rare case in clinical procedure and prone to miss diagnosis.Differential diagnosis with various head and neck diseases is necessary.This article reported a case of solitary cervical submental metastasis of papillary thyroid carcinoma received in the department of surgery,Civil Aviation Shanghai Hospital,Ruijin Gubei Branch,Shanghai Jiao Tong University School of Medicine.The patient came to the outpatient clinic for treatment due to"consciously larger submental tubercle than before".Ultrasound examination revealed suspicious lesions in both the thyroid and submental regions.Ultrasound-guided final needle aspiration biopsy diagnosed as malignant tumor.Surgical resection was performed and the central group lymph nodes dissected Pathological examination confirmed papillary thyroid carcinoma with solitary submental metastasis.This article reported the clinical diagnosis and treatment of this case,in order to improve the disease recognition for clinicians,and make differential diagnosis with other rare neck diseases,and avoid missing diagnoses.