The invention discloses an intelligent electric energy meter for realizing a fault arc detection function and an implementation method thereof. According to the invention, a user load circuit is sampled in real time by voltage and current sampling channels, electricity quantity and electricity fee metering is carried out by a professional metering module, data of the sampling channels is shared atthe same time for fault arc voltage and current detection, a fault arc characteristic frequency detection module is additionally arranged, fault arc judgment is carried out through a software algorithm, parallel fault arcs, series fault arcs and grounding fault arcs are detected reliably, active fault arc event reporting can be carried out through an electric energy meter centralized reading system on the basis of not increasing a large hardware cost and not changing the original home wiring, and low-cost and high-efficiency fault arc detection and early warning functions are realized.