Heat-preservation cup

The invention discloses a heat-preservation cup, and belongs to the technical field of water cups. According to the heat-preservation cup, an inner-layer unit (2) in contact with water is arranged on the inner side of an outer cup body (1); a heat conduction mechanism is arranged between the inner-layer unit (2) and the outer cup body (1); the heat conduction mechanism is spaced from the outer cup body (1) and/or the inner-layer unit (2); a heat conduction control unit is arranged on the outer cup body (1). The heat conduction control unit drives the heat conduction mechanism to be in contact with both the outer cup body (1) and the inner-layer unit (2), so that the heat of the water inside the heat-preservation cup can be rapidly conducted to the outer cup body (1) and can be rapidly radiated through the outer cup body (1), then the heat radiation speed of the water inside the cup body can be increased, and the purpose of rapidly cooling the water can be achieved; when no heat needs to be radiated, any end o