Disclosed herein are a high-temperature ceramic heater with high efficiency comprising terminal zones (2) having larger diameter, and a heating zone (1) having smaller diameter, the heating zone (1) linearly interposed between both the terminal zones (2) where in the shape of the heating zone is flat-type; and a method for manufacturing the high-temperature ceramic heater. Since the high- temperature ceramic heater has broader surface area than bar-type ceramic heaters, based on the same weight, it has higher heat efficiency, and can maintain the temperature distribution within an electric furnace using it. In particular, the high-temperature ceramic heater can be manufactured using less weight of raw material than conventional bar-type ceramic heaters, based on the same surface area, which leads to light weight electric furnace. In accordance with the method for manufacturing the ceramic heater, since the heating zone and terminal zones of the ceramic heater are integrally joined through extruding and abrading processes, no cracks and separation occur in the bonding sites. Accordingly, the life span of the ceramic heater and an electric furnace using the ceramic heater can be extended. In addition, manufacturing time of the ceramic heater can be shortened because additional welding process is unnecessary. Therefore, the method for manufacturing the ceramic heater is very useful in terms of productivity.