The invention discloses a PTC (Positive Temperature Coefficient) rare-earth thick-film-circuit intelligent electric-heating element and a preparation method thereof. The intelligent electric-heating element is characterized by comprising a metal substrate as well as a PTC thick film circuit thermistor and a rare-earth thick film resistance circuit which are arranged on the metal substrate, wherein the PTC thick film circuit thermistor is arranged in a thick film circuit way to be overlapped or positioned in a same plane with the rare-earth thick film resistance circuit to control the temperature of the thick-film-circuit electric-heating element, so that the control precision and sensitivity are improved substantially; or the PTC thick film circuit thermistor can be independently made into the controllable electric-heating element in the form of a thick film circuit. The intelligent electric-heating element disclosed by the invention can be started by low and high voltages as well as alternating and direct currents at present, is small in size, large in surface thermal load, high in thermal efficiency, quick in warm start, excellent in heat-conducting property, strong in thermal shock capacity and easy to process, green, low-carbon and environment-friendly as well as safe and reliable, has a far infrared function; moreover, the temperature fields are uniform and self-controlled level by level; therefore the intelligent electric-heating element is widely applied to series products of novel intelligent electric-heating elements, such as solar cells, wind power cells, lithium ion cells and the like, with new energy requirements.