The invention relates to the technical field of agricultural plantation, and specifically relates to a comprehensive antifrost method for winter-crop potatoes. The method comprises the following steps: 1) selecting a potato variety in good cold resistance; 2) controlling sowing time and moisture to control seedling emergence time; 3) covering mulch films; 4) building a small shed; 5) using a shading shed; 6) nursing a fire in buckets to fume; 7) irrigating in grooves; 8) increasing a NPK fertilizer; 9) and spraying a leaf fertilizer. The method plays an important role in preventing potato cold damage and reducing output reduction of potatoes caused by cold damage, and provides method guidance for winter-crop potato antifreezing production.