It is aimed to realize miniaturization. A power distribution device (Da) is for supplying power to a plurality of loads (L) and includes an input-side conductive path (10) to be connected to a battery (B) (power supply), a plurality of terminal holders (13) each including an input-side terminal fitting (20) connectable to the input-side conductive path (10), and a plurality of output-side conductive paths (37) configured to connect the input-side terminal fittings (20) and the loads (L). Since the number of the terminal holders (13) to be connected to the input-side conductive path (10) is a minimum necessary number corresponding to the number of the loads (L), miniaturization is possible.