The invention relates to a line loss abnormity determination method based on electric energy meter voltage loss phase failure and belongs to the electric power technology field. The method comprises steps that voltage acquisition data of a three-phase three-wire or three-phase four-wire electric energy meter of a gateway or a user is analyzed, multiple limit conditions including a ratio to a ratedvoltage, the abnormity occurrence number and a line loss rate interval of a belonging transformer area or a line are prescribed to be determination bases, omnibearing analysis on acquisition data ofeach phase voltage of the electric energy meter is rapidly carried out, line loss abnormality caused by voltage loss phase failure of the electric energy meter under two conditions of line break and two-phase electricity can not be determined, voltage loss phase failure of the electric energy meter caused by wiring errors of the electric energy meter or electricity stealing can be precisely screened, powerful data support is provided for field inspectors, and line loss processing work efficiency is improved.