The present disclosure relates to a high and low pressure manifold fluid supply system for fracturing units, including: a trailer, a high and low pressure manifold arranged on the trailer, a support frame arranged on a platform of the trailer, and a power distribution switch cabinet arranged on the support frame, which is configured to be electrically connected to the electrically-driven fracturing units and configured to distribute electricity to the electrically-driven fracturing units. Through the high and low pressure manifold fluid supply system integrated with electricity supply facilities therein according to the present disclosure, the electrically-driven fracturing units are powered, in this way, the electricity supply and distribution system in the well site can be effectively simplified, the connection distance of the cables can be shorten, and further the time spent on connection can be saved, thereby improving the well site layout efficiency.