Supercapacitors are one of the most promising technologies to meet the requirements of human sustainabledevelopment, due to their benefits such as high capacitance and rate capability, long cycle life, andlow processing cost. Electrode materials play a decisive role in the performance of supercapacitors, that’swhy many types of research on electrode materials are critical to supercapacitors. As we go forwardtoward highly flexible and bendable electronics. Conducting polymer (CP)-based materials are promisingmaterials in supercapacitors because of their unique advantages including good conductivity, flexibility,relatively cheap, easy synthesis, and so on. This review summarizes recent research progress of CPs (includingpolypyrrole (PPy), polyaniline (PANI), and polythiophene (PTh)), the CP-based composites forsupercapacitors in purpose and concentrating composites’ effect on supercapacitive parameters, besidediffusion mechanism with the calculations of supercapcitive parameters in every technique. Eventually, we give a brief outline of the development directions of CP-based supercapacitors with suggestionsfor the future of supercapacitors based on the last decade’s research.