The invention provides a method for cultivating deodar seedlings. Single seed bunch planting is conducted through a nutrition bowl in a heat preservation facility (a permanently or temporarily erected arch greenhouse), seeds are sown in the heat preservation facility, temperature and humidity for seed germination are artificially increased, the condition that the seeds do not germinate due to drought and water loss can be effectively avoided, in addition, after the seedlings emerge, the seedlings can be prevented from being affected by harmful weather such as wind and frost, and a good growth environment is provided for the seedlings. The seedling emerging rate in the nutrition bowl is over 97%, the seedlings emerge one month earlier than those with seeds sown in a large field, the seedling height ranges from 30 cm to 40 cm when the seedlings are transplanted the next year, the seedlings are 10 cm to 20 cm higher than the seedlings with the seeds sown in the large field, the seedlings grow in the nutrition bowl in the greenhouse, management of shading operation, rainproof operation, water drainage, disease and pest control and the like is convenient, large seedlings can be obtained in the current year, and therefore the purposes of early sowing, early germination and increase of the seedling emerging rate and the annual growth amount are achieved. Meanwhile, bunch planting is conducted in the nutrition bowl, the excellent seedling emerging rate and the seed use rate for seedling cultivation are more effectively increased and the high-quality efficient seedling cultivation purpose in the seed sowing process is achieved.