The invention relates to a 4-20mA circuit electricity taking-based low-power-consumption networking method for 802.15.4e wireless equipment. The method comprises the following steps: performing circuit electricity taking on wireless equipment; establishing an ultralow-energy-consumption application-oriented wireless network; realizing one-way time synchronization based on the wireless network through the wireless equipment; finishing neighbor discovery on the basis of the time synchronization; interacting the wireless equipment with the wireless network; pausing the process along with the electric quantity measurement result of an energy storage monitoring module. The messages are detected by continuously switching channels so as to realize rapid and energy-saving one-way time synchronization, the traditional monitored beacon frame is replaced by monitoring common messages on the basis of time synchronization, a monitoring order of neighbor discovery is improved, the monitoring is started at the time slot in which a beacon frame possibly occurs only, the beacon frame is in a sleep state in the rest time, the channel searching time is saved, the energy consumption generated by the neighbor discovery is reduced, and the time and the energy consumption of establishing the whole network are further reduced.