The application relates to the cultivation field of paeonia, and discloses a method for promoting cultivation of paeonia by breaking sleep with natural low temperature, which comprises the following steps: planting paeonia in a
sunlight greenhouse in autumn, planting for years at a time; breaking sleep of the paeonia by using natural low temperature in autumn and winter, assisting with a temperature-keeping and light-shielding cotton quilt for
daytime covering, and removing the cotton quilt and ventilating at night; according to the cold requirement of different varieties, the natural low temperature breaking
sleep treatment is carried out for 45-70 days, and water is not supplemented during the period; after the sleep breaking, the temperature is naturally increased by using solar
radiation, and the day and night temperature is regulated and controlled through ventilation and temperature-keeping measures, the whole process does not need
artificial light supplement, and growth period management is assisted. The light is blocked by covering the cotton quilt with high light shielding rate during the day, the cotton quilt is removed and ventilated at night, the
ground surface temperature is controlled to be less than or equal to 7.5 DEG C, the paeonia naturally accumulates the cold requirement in the open ground environment, does not need to depend on the
cold storage equipment and artificial low temperature environment, the
energy consumption and facility cost are greatly reduced, and the green
environmental protection concept is met.