The paper aims to prepare flexible electrode film for supercapacitor with untreated carbon cloth (UCC), chitin nanofibers (ChNFs), multi-wall carbon nanotube (MWCNTs) and pyrrole (Py) as raw materials. Firstly, the surface roughness of carbon cloth was improved through chemical oxidation. Then, ChNFs/MWCNTs were attached on the surface of OCC by vacuum-filtration process to increase the load space of the carbon cloth. Finally, the capacitive performance of the composite film was increased through in situ polypyrrole (PPy). Meanwhile, OCC and PPy composite films were prepared for comparison. The specific capacitance of OCC/ChNFs/MWCNTs/PPy film reached 307 F/g, which was 1.75 times of the specific capacitance of OCC/PPy (175 F/g) at the scan rate of 5 mV/s. Moreover, OCC/ChNFs/ MWCNTs/PPy film had good cycling stability with the capacitance retention of 72.3% and coulombic efficiency of 73.8% after 2000 cycles at the current density of 2 A/g. This high-performance OCC/ChNFs/MWCNTs/PPy film has high specific capacitance and cycling stability. It could be regarded as trackable package in Internet of Things.