The invention provides power distribution network cable connector fault diagnosis equipment and a power distribution network cable connector fault diagnosis method. The power distribution network cable connector fault diagnosis equipment comprises an electric field intensity acquisition device (RSM), a wireless cascade repeater (WRM) and a handheld unit (MTU), wherein the electric field intensityacquisition device (RSM) is clamped on a tested cable connector, completes electric field intensity acquisition of the cable connector by means of steady-state and transient electric field sensors, and transmits acquired signals to the wireless cascade repeater (WRM); and the electric field intensity obtained through measurement by means of the electric field intensity acquisition device (RSM) isconverted into a voltage according to an electric field and voltage feature database, and fault diagnosis is conducted according to a voltage value. The power distribution network cable connector fault diagnosis equipment and the power distribution network cable connector fault diagnosis method realize remote monitoring and diagnosis, provide a new test means for the maintenance operator, improvethe working efficiency of the staff, reduce power outage time, increase benefits, and reduce transformer operation safety risks.