The invention relates to the technical field of agricultural facilities and discloses a micro greenhouse with a winch type self-capping structure. The micro greenhouse comprises a capping device, a barrier, a lifting device, a driving device and a base. The capping device is connected with the base through the barrier. The lifting device and the driving device are arranged in the base. The driving device is used for driving the lifting device to rise and descend. The lifting device is used for driving the capping device and the barrier to move in the vertical direction. When a preset distance is reserved between the capping device and the base, a cavity for accommodating a plant is formed among the capping device, the barrier and the base. The capping device is used for achieving self-capping of the cavity. The movement of the capping device and the barrier in the vertical direction is achieved through the lifting device, the cavity for accommodating the plant can be formed by the capping device, the barrier and the base, and the capping device can further achieve self-capping of the cavity. The greenhouse is simple in structure, the capping steps are simple and convenient, the limitation to the fact that the greenhouse reaches a preset height can be reduced, a material storage space is saved, and the cost is reduced.