The invention provides a division propagation method suitable for 
plateau lavenders, and belongs to the technical field of 
lavender propagation. The propagation method comprises the following steps: applying a base 
fertilizer to a deep, smooth and 
saline-alkali-free soil block, ploughing, ridging, furrowing and carrying out 
soil preparation; planting healthy and 
disease-free 
lavender plants in furrows in a division manner, watering, topdressing, 
pruning, irrigating, weeding and carrying out 
disease field management; after the lavenders enter a full blooming period, harvesting the lavenders; and managing the lavenders before 
overwintering in the middle ten days and the last ten days of the November. According to the division propagation method, soil permeability is improved through ridgingand furrowing, growth and development of a 
root system are promoted, meanwhile, drainage and 
irrigation are facilitated, topdressing and 
irrigation are timely carried out to preserve soil 
moisture andincrease temperature, 
germination and new shoots of lavenders in the coming year are promoted to increase the flowering rate through multiple 
pruning, meanwhile, robust growth of the lavenders is promoted through long illumination time and strong 
sunlight in the 
plateau area, and the division propagation 
survival rate is improved. Moreover, seedlings obtained by the method disclosed by the invention bloom rapidly, plants grow robustly, flower shapes are full, and the yield is high.