Pyogenic granuloma in larynx is very rare. It is benign disease, and histopathologically it looks like capillary-rich hemangioma. The most common etiology of pyogenic granuloma is laryngeal trauma, usually related to intubation. It can be treated with speech therapy, medication, or surgical resection. We experienced a case of large pyogenic granuloma in larynx with feeding vessels of a 24-year-old woman. When she visited us, she suffered from dyspnea. We had performed excision of laryngeal mass by laryngeal microsurgery emergently. She was diagnosed with pyogenic granuloma in larynx after operation.