For heat capacity measurement of ceramic materials at high temperatures above 1500 K, two new calorimeters, i.e. a high speed cooling calorimeter and an advanced-direct heating pulse calorimeter, have been developed in our laboratory. The high speed cooling calorimeter is assembled of an induction heating furnace, a paraboloidal mirror and a high speed six-wavelength pyrometer. In this calorimeter, the heat capacity is determined from the cooling rate of a sample dropped from the induction heating furnace. As a simulation of a dropped specimen, two different experiments on transient modes were made using a calibrated tungsten lamp in the temperature range 2060-2180 K: (1) by changing temperature with time (cooling curve measurement), and (2) by changing the position of a tungsten lamp vertically at constant temperature. Both results show reliability of this calorimeter at high temperatures. The advanced direct heating pulse calorimeter is a re-designed and reconstructed apparatus of the direct hearing pulse calorimeter previously developed in our laboratory to increase the measuring temperature for the heat capacity up to 2000 K. By the improvement of a new vacuum vessel, molybdenum thermal insulator and tantalum heating wire, heat capacity and electrical conductivity of graphite could be measured up to 1750 K.