Polypropylene film is one of the corematerials of power capacitors and its raw material，polypropylene particles，are all imported from abroad. For solving this“stuck neck”problem，many universities and enterprises have carried out many studies in recent years on the localization of the capacitor industry chain. In this paper，the electrical strength，compatibility and aging performance of polypropylene roughened films made of different polypropylene particles are tested and compared. The test results show that the polypropylene films made by the domestic and foreign particles have comparable performance. Under the action of DC electric field，the breakdown field strength of domestic particle films is higher than that of imported particles，but the dispersion is larger. The capacitor based on the domestic particle film has passed the test certification of the third-party testing authority. The main technical indicators are comparable to those of the capacitor produced by the imported particles，indicating that the domestic roughened poly-propylene film can meet the application requirements of capacitors and is expected to replace imported particles to achieve full localization.