Abstract: A hunting arrowhead assembly includes a shaft body, at least one guiding slot, a pair of access slots, a pin member, a pair of piercing members, a penetrating member and a cam member. The pin member is movable relative to the shaft body between a front position and a rear position. When the pin member is in the rear position, a piercing free end of each of the piercing members is disposed outwardly of a corresponding one of the access slots. When the pin member is in the front position, the piercing free end is retractable in the corresponding one of the access slots.