As there is no standard for information integration for PD monitoring devices, information islands exist in the PD on-line and off-line devices. A scheme of standardization of information integration is put forwand in this paper. A PD information file model is provided, which is based on XML and IEC61850 file model. An information model is given, which is based on device information, abstract, diagram and trend analysis of PD event. The goal of standardization of information is to let the PD on-line and off-line devices share information and can interoperation. The testing shows that the information of PD event can be processed and displayed on PD on-line and off-line monitoring system. The results of two sytems are consistent. The users do not need to switch from different systems. It avoid the complicated operation and error information. The scheme can be widely adopted in the industry.