The utility model provides a take watt -hour meter calibrating of WIFI interface, include by the school electric energy meter, by school electric energy meter connection voltage standard source and current standard source, still connected the WIFI interface by school electric energy meter, voltage standard source and current standard source, the WIFI interface is connected with the mobile terminal communication, and mobile terminal controls voltage standard source and current standard source respectively to being carried out the check -up operation by the school table through the WIFI interface, by the check -up of school electric energy meter as a result data transmission erupt simultaneously to the WIFI interface and give mobile terminal and save and manage, the utility model discloses a technique effect: use the WIFI wireless interface technique, realize the wireless control of electric energy meter check -up. The mobile terminal that can use the multiple WIFI of taking function controls the standard source, has overcome the unicity and the space limitation of wired connection, provides very big facility for electric energy meter check -up work. Simple structure, convenient operation is accurate reliable.