The invention discloses a culturing method of resisting coldness and overwintering for winter green manure crops in Beijing-Tianjin-Hebei regions. The method comprises the steps that winter green manure crops of the variety capable of resisting and tolerating coldness are selected; before September 25th, land is levelled, seeds are sowed in line, a mixed potassium sulphate and potassium carbonatefertilizer or a potassium humate fertilizer is applied to promote seed germination and seedling growing, a coldness resistance fertilizer is applied, and after pressing, the seeds are appropriately watered to keep wet until seedlings emerge. In the seedling period of the winter green manure crops, a straw fertilizer is applied to resist coldness, keep warmth and provide nutrition. The seedlings are watered by frozen water, which is beneficial for overwintering of the green manure crops. After the winter green manure crops turn green, urea is rapidly dressed to promote early and rapid growing of the seedlings. The culturing method of resisting coldness and overwintering for the winter green manure crops is beneficial for safe overwintering of the winter green manure crops, coldness resistance, warmth keeping, and increasing of the overwintering rate, the reviving rate, the covering rate and the biological yield, therefore carbon is stored, nitrogen is fixed, the fertility of soil is improved, and dust raising is inhibited, using of a later crop fertilizer is reduced, and a pure organic fertilizer replaces a chemical fertilizer; energy conservation and emission reduction are achieved, the environment is beautified, and the scientific planting method is provided for healthy crop rotation and fallow planting of the Beijing-Tianjin-Hebei regions.