Authors report the preliminary result of 86 consecutive femoral head replacements with ceramic head performed at Chonnam University Hospital(73 hips) and Kwangju Christian Hospital(13 hips) during the period of 2 years and 6 months between January 1985 and June 1987. The results were as follows ; l. Eighty-three patients were comprised of 41 men(44 hips) and 42 women(42 hips). 2. Their average age at operation was 62.8 years, the oldest being 86 and the youngest being 24 years and 57 patients(68.7%) of them were over 60 years of age. 3. The causative diseases of the femoral head were hip fracture and its related conditions in 74 hips, and idiopathic avascular necrosis in 12 hips. 4. Associated general diseases, a total of 69 in number, could be diagnosed in 54 patients of them. These included hypertension(18 patients), cardiovascular disease(10 patients), and diabetes mellitus(8 patients). 5. The average diameters of the ceramic head were 49.8 mm in men and 45.1 mm in women. 6. The types of femoral stem were cemented stem(Xenophor 900 stem) in 45 hips and noncemented stem(Autophor 900S stem) in 41 hips. 7. The early postoperative complications, a total of 9 in number, were encountered and these included death in hospital(3 patients), trochanteric fracture(2 patients), pneumonia (1 patient), and others(3 patients). 8. The late postoperative complications, a total of 9 in number, were encountered and these included acetabular erosion(4 hips) and heterotopic ossification(5 hips). 9. Forty-nine hips could be followed more than 1 year with average follow-up of 19.9 months. The hip function of these 49 hips were excellent in 13 hips, good in 24 hips, fair in 8 hips, poor in 3 hips and bad in 1 hip. 10. In conclusion, it can be stated that the femoral head replacement with ceramic head prosthesis is very promising in reducing the incidence of acetabular erosion and maintaining the regained hip function.