Abstract: 【Objective】 Studying the effects of different winter dripping irrigation quotas on the quality of "dry seeding wet output" planting, cotton physiology, growth characteristics, and yield, determining the water-saving and efficient fallow period cotton field moisture regulation strategy. 【Methods】 Using a small amount of water regulation during the cotton field fallow period, and the "dry seeding wet output" irrigation method after spring sowing, a total of 9 treatments were set in this experiment, with 4 gradients for winter dripping irrigation quotas: winter dripping irrigation during fallow period (W₁S₀-W₄S₀): 600, 900, 1,200 and 1,500 m³/hm²; after spring sowing, two schemes of no "dry seeding wet output" and "dry seeding wet output" were used, with a quota of 225 m³/hm² for "dry seeding wet output" (W₁S₁-W₄S₄), and conventional winter irrigation of 2,250 m³/hm² as the control treatment. 【Results】 Compared with winter dripping irrigation alone, the combination of winter dripping irrigation and "dry seeding wet output" could promote early cotton growth (plant height and stem diameter significantly higher than with no "dry seeding wet output" and conventional winter irrigation), and treatments W₁S₁-W₄S₄ could control excessive plant height growth during the nutritional growth to reproductive growth stage to a certain extent, with treatments W₃S₃ and W₄S₄ being the most significant; the combination could increase the leaf area index during the seedling and budding stages, and in the late stage of flowering as well, the leaf area index of W₁S₀-W₄S₀ treatments was slightly higher than the CK and W₁S₁-W₄S₄ treatments; the total dry matter accumulation of W₁S₁-W₄S₄ treatments was significantly greater than that of W₁S₀-W₄S₀ treatments, which could promote reproductive organ dry matter accumulation, with the proportion of dry matter accumulation in reproductive organs in W₃S₃ and W₄S₄ treatments exceeding 50%; the leaf area index in the late stage of flowering was significantly negatively correlated with yield, and the total dry matter accumulation was significantly positively correlated with yield. The yields of combination of winter dripping irrigation and "dry seeding wet output" were higher than winter dripping irrigation alone and conventional winter irrigation, with the yield of treatment W₄S₄ being approximately 18.8% higher than that of winter dripping W₄S₀ treatment and about 13.5% higher than the CK. 【Conclusion】 "Dry seeding wet output" irrigation under fallow period dripping winter irrigation regulation can significantly improve cotton yield by 3.5%-13.5% while saving irrigation water by 24%-36%.