Abstract: To explore the cultivation technology of sesame in Liaoning,‘Liaozhi 7’was used as the material, and a random block experiment was conducted with 4 sowing dates and 6 planting densities. The growth period, yield composition factor and yield were investigated. The results showed that different sowing dates affected the growth process and growth period of sesame. The vegetative growth time from seedling to squaring stage and the flowering period were shortened along with the delaying of the sowing date, and the growth period was also shortened. Different sowing dates and planting densities affected yield significantly, for the yield factors, the effect on the number of capsule per plant was significant, while that on capsule number and 1000- grain weight was not significant. With the delaying of sowing date and the increase of density, the number of capsule grains and the weight of 1000 grains decreased. All together, in spring sowing areas of Liaoning, the suitable sowing date is May 10 to 20, and the optimum density is 15.0×104-22.5×104 seedlings/hm2.