The invention discloses a cultivation method for quickly breeding allium fistulosum. The cultivation method mainly comprises the steps that cultivation at different places is reasonably arranged, allium fistulosum seeds are sown at a cold area which is suitable for allium fistulosum growth at the seedling stage, it is guaranteed that the average stem diameter of the allium fistulosum can reach 1-2 cm after the allium fistulosum seeds are sown for about 90 days, the natural environment when the first frost date approaches at the local place is fully utilized, so that the allium fistulosum is subjected to vernalization smoothly, plants are transported to the area with the temperature being 20-30 DEG C for field planting, the plants can enter in a reproductive growth stage smoothly, the allium fistulosum blooms after field planting is conducted for 30-40 days, and fruitage can be achieved after 60 days; the first alternation of generations of the allium fistulosum can be completed within six months; afterwards, harvested seeds are sown continuously, the temperature is controlled within the range of 10-25 DEG C, it is guaranteed that the average stem diameter of the allium fistulosum can reach 1-2 cm after sowing is conducted for about 90 days, field planting is carried out in the natural environment at the early spring, sudden change of seasons and air temperatures is utilized ingeniously to enable the allium fistulosum to enter in the reproductive growth stage through vernalization, and fruitage is achieved after field planting is conducted for 60-80 days; the rapid two-generation breeding process of the allium fistulosum can be realized in one year. By means of the cultivation method for quickly breeding allium fistulosum, the breeding speed of the allium fistulosum can be greatly increased.