The invention discloses a passenger concentration heat management system. The passenger concentration heat management system comprises three loops, wherein the refrigeration mode loop is composed of a compressor, a four-way reversing valve, a first heat exchanger, a second air fan, a throttling device, a first electromagnetic valve, a second heat exchanger, a first air fan and a first one-way valve; the heating mode loop is composed of the compressor, the four-way reversing valve, a second electromagnetic valve, a third heat exchanger, a second one-way valve, the throttling device, the first heat exchanger and the second air fan; the liquid loop is composed of the third heat exchanger, an electric heating device, a warm-air core, a warm-air fan, a third electromagnetic valve, an expansion water tank and a water pump; the heating mode loop and the refrigeration mode loop share the compressor, the four-way reversing valve, the first heat exchanger, the second air fan and the throttling device; the second heat exchanger and the third heat exchanger are connected in parallel, and the liquid loop and the heating loop share the third heat exchanger. The passenger concentration heat management system is good in heating effect, high in heat exchanging efficiency and low in energy consumption; hot air is blown from the bottom of a carriage, and the riding comfortable performance is good; heat can be provided for a vehicle-mounted battery pack.