Abstract: In order to improve the high-quality and high-yield cultivation technology of fibrous industrial hemp, the fiber industrial hemp variety “Hanma 5” was used as the experimental material.Five planting densities of D1(3.0 million grains·ha^-1),D2(3.5 million grains·ha^-1),D3(4.0 million grains·ha^-1),D4(4.5 million grains·ha^-1)and D5(5.0 million grains·ha^-1) were set with different row spacing R1（15.0 cm） and R2（7.5 cm）,and the effects of different row spacing and density configurations on the industrial hemp were analyzed, including agronomic traits and dry matter accumulation and distribution.The results showed that the plant height, stem diameter and root length of hemp at seedling stage, flowering stage and technological maturity stage were the best under R1 D4 treatment, which were significantly increased by 8.59%-56.01%,2.90%-82.81% and 32.56%-113.31% respectively compared with other treatments.The dry weight of hemp plant treated with R1 D4 was the best at seedling stage and flowering stage, which was significantly increased by 9.56%-261.21% and 75.96%-346.25% compared with each treatment at the same time.The dry matter accumulation of plants in process maturity reached the maximum in R2 D4 treatment.The comprehensive analysis showed that the row spacing of 15 cm and the density of 4.5 million grain·ha^-1 were suitable for high-yield cultivation of “Hanma No.5” in Qiqihar Keshan area.