Objective:To provide reference for clinical diagnosis and treatment by classifying and collecting the maxillofacial masses occurred in children

analyzing the common types’ incidence

and listing some rare kinds which are less reported. Methods:Data of859 children with mass in maxillofacial region were collected and classified into 4 types based on pathology. Disease constituent ra-tios in each type was calculated. Each type was subdivided based on ages and sexes(location distribution is partitioned in some tumors). Chi-square test was used to do statistical analysis. Results:Tumor took up the highest proportion(49.13%)among all masses in maxillofacial region; sex ratio(male∶female)was 1.03∶1;the average age was(4.71±3.94)years. Hemangioma was the most common disease

which accounted for 24.21%;benign aganist malignant tumors ratio was 139.67∶1. Cyst was more common in female

sublingual gland cyst was the most common type(43.82%). Tumor-like lesion and tumor were mostly observed in male;epulis occupied the highest percentage(34.72%) in tumor-like lesion;the most common tumor was hemangioma(49.29%);inflammatory mass and lymphnoditis were the most types in the other masses. Hemangioma was located predominantly on the lips;lymphangioma was mostly appeared on the cheek;lymphatic hemangioma was commonly seen on the tongue. Rare diseases included congenital dilatation of submandibular ducts

melanotic neuro-ectodermal tumor of infancy

low-grade pleomorphic spindle cell carcinoma

etc. Conclusion:Children are in key period of growing

while maxillofacial region is a special location;early diagnosis as well as prompt and appropriate treatment for the mass is vital to remain the structure and function integrality of organ.