The invention relates to a method for solving information acquisition of an area to which an electric meter belongs. According to the method, a host machine is connected below a transformer or concentrator at the area, a subordinate machine is connected at one end of a measured meter, the host machine carries out encoding through adjusting a power frequency zero point position, and broadcasts and transmits a code sequence containing information of the area in turns at A/B/C three phases, while a receiving end subordinate machine receives and demodulates information transmitted by the host machine, and the information comprises an area number and a phase position; and the functions of the subordinate machine can be realized by a carrier wave electric meter through direct compatibility. The invention provides the method for solving the information acquisition of the area to which the electric meter belongs and is combined with a current area power line carrier collecting scheme, the method is free from influence of severe environment, strong noise and high attenuation of a power line channel, and safely and reliably solves the problem that which area the electric meter belongs to can not be accurately judged, powering off is not needed, and the required information can be obtained through the automatic judgment of the electric meter.