Abstract: The yield of cotton depends on cultivation methods used. Cotton canopy designing cultivation methods aimed at improving canopy economic productivity through collecting and optimizing traditional technologies based on advantageous thermal resources availiable in the low-reach of Yangtze River. Cotton canopy designing cultivation methods consisted of 4 techniques,i.e, put off topping time,put off ending time of spraying pestcides, added amount of fertilizer applied after topping,added amount of chemical control applied after topping.Results of experiment in the plot and demonstration in the mass area showed that canopy designing cultivation could increase cotton canopy bolling number and single boll weight significantly.lint yield was increased by more than 20% on average. Applicatoin and extension of Cotton canopy designing cultivation methods would have positively stimulating effect for higher yield and higher efficency cultivation by making full use of advantageous thermal resources available in autumn and superior boll bearing part of cotton canopy in low-reach of Yangtze River.