Nursery stock cold-proof shed and nursery stock cold-proof method

The invention provides a nursery stock cold-proof shed and a nursery stock cold-proof method. The cold-proof shed comprises a framework and a cold-proof film. The framework comprises stand columns, waist hoops, arched camber beams and a top center circular ring. The stand columns are circularly arranged in eight directions and are inserted into the ground to be fixed. The waist hoop is horizontally arranged from the ground surface, and is fixed with the stand column to the top end of the stand column; the arched camber beams are combined with the stand columns to be arranged at the top end of the framework, and the two ends of each camber beam are fixed to the top ends of the diagonal stand columns to form a dome structure. The top center circular ring is arranged in the center of the dome and is fixed with the arched camber beams; the cold-proof film wraps the framework and is fixed to the stand columns, the waist hoops and the arched camber beams of the framework. And the cold-proof film is provided with a