Pulp polyps are not cancerous. Pulp polyps are a manifestation of proliferative pulpitis, which usually occurs in children and adolescents. The caries cavity is deep, the pulp is exposed for a long time, and the pulp perforation is large, because the apical hole of young permanent teeth is thicker, and the pulp blood flow is more abundant, so the inflamed pulp tissue will proliferate in the form of polyp-like changes. It protrudes through the pulp perforation into the cavity and sometimes fills the cavity, causing a painful sensation when eating, brushing, or touching, or heavy bleeding. Pulp polyps are a sign of inflammation of the pulp and can be treated by routine root canal therapy, which can be performed under anesthesia to clean out the inflamed pulp and complete the subsequent root canal treatment and filling.