To deal with the plenty of verifying work in SCADA data caused by the centralized telemonitor mode in power grid, a quickly verifying method is given. For the status information of SCADA data, this paper proposes to use its SOE time tag bits to carry the information object address. With the help of the simulation software, the smart substation bay-level device’s MMS message, which carries address in form of time tag, is automatically sent out. The telecontrol device receives and sends these information to telecentre in the 104 format. A comparison is made between the information’s address and the value of time tag. And the result would independently indicate the correctness of information conversion in telecontrol equipment. Because it could be performed automatically by the computer, the new method is more effective than manual operation.