At present, filling in and checking secondary safety measures tickets of smart substation are inefficient and error-prone. This paper proposes a secondary safety measures strategy on automatically generating and online checking technology, and designs a set of policy rules of secondary safety measures. Based on the relationship between the secondary equipment and the outage status of the corresponding equipment, the developed software analyzes the separation points and the separation measures, then automatically generates word format safety tickets and XML format of the secondary safety measures. The developed hand-held terminal device with manufacturing message specification (MMS) communication functions could analyze the substation configuration description (SCD) file and the XML format and obtain real-time state information by connecting to the corresponding secondary equipment. The implementation of the safety measures has online visual graphical interface for online checking. The automatic generation and online checking technology would improve the efficiency of the smart substation site technical transformation, defects eliminating and proof test, and reduce the fault of the work caused by the human factors.