To better satisfy the need of the future smart grid for monitoring and sharing of overall condition information， an integration method for the condition monitoring of power transmission and transformation equipment based on IEC 61850 is proposed， and the system structure of the integration platform is given. By studying such crucial problems as the seamless general communication server， protocol conversion between IEC 60870-5 and IEC 61850 and real-time communication of condition monitoring， the power transmission and transformation condition on-line monitoring devices from different manufacturers and of different communication interfaces and communication protocols can be easily connected and integrated into the platform at the same time， with unified communication interface of IEC 61850 provided. In addition， the main service rendered， such as association， directory access and report， is captured and analyzed with the KEMA UniCA 61850 Analyzer， proving the validity and feasibility of the method proposed.