The invention provides a wiring terminal and a power distribution system. The wiring terminal comprises an insulating shell, a main conductor and at least two layers of sub-conductors, wherein the insulating shell is provided with a front base and a rear base, and at least one middle base is clamped between the front base and the rear base; the main conductor and the at least two layers of sub-conductors are arranged in the insulating shell, and the main conductor is electrically connected with the at least two layers of sub-conductors; the main conductor is clamped between the front base andthe rear base, and the middle base is clamped between the two adjacent layers of sub-conductors; and each layer of sub-conductors is provided with at least two sub-conductor pieces along the longitudinal direction of the insulating shell, and the area of a flow guiding section of the main conductor is more than twice of the area of a flow guiding section of each sub-conductor piece. The wiring terminal not only can realize a function of transmitting electric signals, but also can realize the functions of distribution and convergence, and is wide in application range.