In the semiconductor industry， temperature control is of paramount importance， yet numerous research challenges persist， such as the selection of thermal control materials and the design of heat dissipation management systems. The development of flexible electronic films is also a significant challenge. Currently， flexible electronic films based on graphene and carbon nanotubes are hindered by high costs， limiting their widespread application. Therefore， the development of carbon black flexible electronic films with excellent heating performance， a broad temperature regulation range， and suitability for large-scale applications is of considerable significance. To determine the optimal carbon black loading， this study fabricates composite films with varying carbon black contents and conducts a series of tests， including percolation threshold， maximum temperature， rapid thermal response， cyclic heating stability， and tensile performance tests. The experimental results indicate that the percolation threshold of carbon black in the polymer matrix is approximately 20%. The temperature regulation range of the carbon black heating films is between 25 ℃ and 60 ℃. Under a 32 V voltage， films with 50% and 55% carbon black content reaches maximum temperatures of 53.9 ℃ and 60 ℃， respectively. Both films demonstrate not only a broad regulation range but also excellent thermal stability after cyclic heating， along with superior mechanical properties.