The invention relates to a carbon fiber electric heating core without a support body and a demolding method of the carbon fiber electric heating core without the support body and belongs to the fieldof preparation of carbon fiber infrared electric heating cores. The method comprises the following steps that firstly, the surface of a support core rod of a high-temperature-resistant carbon fiber electric heating body is wrapped with demolding cloth, a demolding agent on the surface of the demolding cloth is melted into liquid by utilizing instantaneous high-temperature heat radiation energy generated when carbon fibers are electrified, and meanwhile mesh fabric in the demolding cloth is carbonized into powder, so that a stable gap exists between the high-temperature-resistant support core rod and the carbon fiber electric heating core, and demolding is realized after cooling. The demolding method solves the problems of low demolding efficiency, poor quality and the high rejection rate of an existing carbon fiber infrared electric heating core in a demolding process. According to the demolding method, the demolding mode of the cooperative use of the demolding cloth with the melting characteristic and a high-temperature-resistant support core rod die is adopted, during demolding, the demolding gap can be flexibly adjusted according to the wrapping thickness of the demolding cloth,so that the demolding method is suitable for demolding carbon fiber electric heating tapes in different shapes and has the good application prospect.