Solitary fibrous tumor (SFT) is a soft tissue tumor that is rarely observed in the head or neck region. We report the case of a 43-year-old woman who presented with a 1-month history of a rapidly growing palate tumor and difficulty in eating. Tracheotomy was considered because of the possibility of airway obstruction by the tumor. Preoperative examination suggested bleeding risk during the operation, so that the procedure was performed with precautions taken to prevent bleeding. The patient was also considered to be at risk for perforation of the soft palate after tumor excision. Therefore, the soft palate was reconstructed with a mucoperiosteal flap prepared from the hard palate. Although histopathology indicated evidence of malignant transformation, the patient showed no evidence of recurrence or metastasis at the last follow-up conducted 1 year after the surgery. Long-term follow-up is necessary, so that any local recurrence or metastasis is detected and treated early.