Children’s gums swollen with a lump of flesh is common in chronic apical periodontitis and gingival polyps, depending on the situation requires root canal treatment or surgical removal. 1. Chronic apical periodontitis. Tooth decay caused by chronic periapical periodontitis, inflammation reaches the apical area can not get drainage will break through the periosteum to reach the submucosa, resulting in apical area of the swelling. After diagnosis, root canal treatment is usually carried out to eliminate the inflammation in the pulp cavity, and the swelling will slowly disappear. 2. Gingival polyps. Due to long-term dental caries adjacent to the teeth, food impaction and other foreign body stimulation caused by abnormal gum growth led to gingival polyps, the need for timely filling of the carious parts of the restoration of the shape of the dental tissue, and surgical excision of gingival polyps. Children’s gums swollen a lump of flesh, it is recommended that timely medical treatment so as not to affect oral health.