Heat preservation box capable of configuring heat preservation duration

The invention provides a heat preservation box capable of configuring heat preservation duration. The heat preservation box comprises a box body, a box cover, cold storage ice rafts and warm ice rafts, wherein the box cover seals the box body, slots are arranged in the box body and the box cover correspondingly, at least one detachable inserted-connection heat preservation plate is arranged in theslots, the cold storage ice rafts are fixed to the inner surface of the box body and the lower surface of the box cover, the warm ice rafts are attached and fixed to the cold storage ice rafts, and the warm ice rafts form the inner surface of the heat preservation box. The heat preservation box has the beneficial effects that the heat preservation plate is detachably connected with the box body in an inserted mode, heat preservation time can be configured according to the number of heat preservation plates, ventilation holes communicate with ventilation grooves, articles in the heat preservation box are uniformly coo