Abstract: In order to investigate new simplified techniques to cultivate high yield cotton plant, the control technique of plant frame of cotton, the boll quality varied in different plant types, parts and leafy shoots, the suitable planting density and variety adaptability of multi-stem cotton were studied in field experiments for ten consecutive years. Results showed that the highest yield was obtained in cotton plant of down-umbrella type, which was shaped by leafy shoots control. The yield was 9.0%-10.9% higher than that of other treatments. The control techniques included leafy shoot left and early topping, that was, top removal from the 12 fruiting branches of main stem and leafy shoot topping in July 5. Single boll weight of leafy shoots was heavier than those of 1-4 fruit branch of multi-stem type and conventional type, while the fiber quality had no difference. The suitable planting density of multi-stem cotton was 3.3×10⁴ plants/hm²-5.1×10⁴ plants/hm². The multistem cotton had wide adaptability and the hybrids with developed leafy shoots had higher yield potential. The key simplified techniques in cultivation of high yield multi-stem cotton were enlarging space, suitable planting density, leafy shoots left and topping of leafy shoot in advance.