The invention provides an inner circulation heating distribution box. The inner circulation heating distribution box comprises a heat preservation box body, an inner circulation heating system, an inner circulation dehumidifying system, an upper layer door, an upper layer left storage chamber, an upper layer right storage chamber, a lower layer door and a lower layer storage chamber; the inner circulation heating system is arranged below the lower layer storage chamber, the inner circulation dehumidifying system is arranged above the lower layer storage chamber and comprises a rectangular top plate, a rectangular frame, a dehumidifying device, an exhaust fan II, a cable II, an exhaust fan II power source, a charging port II and an exhaust fan II switch. The technical problems that in the prior art, the distribution box is unreasonable in structure and not even in heating, the battery capacity is not enough, and in the remote long-time distribution process, the temperature and the taste of food can be difficultly ensured are solved. The technical effects that the distribution box is reasonable in structure and uniform in heating, and distributed objects are fresh and good in taste are achieved.