Provided are a heat dissipation structure and a heat dissipation system. The heat dissipation structure includes a heat dissipation channel and a plurality of heat dissipation fins. The plurality of heat dissipation fins are arranged on at least one side of the heat dissipation channel. Heat dissipation fins arranged on the same side of the heat dissipation channel are arranged along an extension direction of the heat dissipation channel. The heat dissipation channel and the plurality of heat dissipation fins are each formed as a cavity structure. Each heat dissipation fin includes a first end and a second end arranged opposite to each other. The first end is a closed end, and the second end is an open end. The second end communicates with the heat dissipation channel.