Calcified cephalhematoma is a rare condition wherein hematoma that develops between the infant's skull and periosteum due to passage through the birth canal during childbirth is not absorbed spontaneously and remains, subsequently ossifying. Surgical treatment is often chosen to improve the cosmetic appearance or relieve cerebral compression. A 4-month-old boy presented to our department with a left parietal mass. We diagnosed calcified cephalhematoma. His family requested surgery to improve his appearance; thus, surgical treatment was performed at 1 year of age. We created a three-dimensional model, performed model surgery preoperatively, and used navigation intraoperatively. These methods facilitated the determination of the surgical site and shortened the operation time. One year postoperatively, the cranial morphology is well maintained, and the family is satisfied with the surgery results.