Abstract: Using millet variety Changsheng 07 and soybean variety Zhonghuang 30 as materials, the effects of different millet intercropping soybean models on the light exposure in different leaf layers and platnt growth of millet and soybean under different intercropping pattern were analyzed, and the effects of intercropping patterns on the accumulation and distribution of photosynthetic products in millet and soybean were analyzed. The results showed that different intercropping patterns promoted the dry matter accumulation of millet, increased spike length and single spike weight, and facilitated the formation of large spikes in millet. Due to the shading effect of millet, dry matter accumulation, effective pod number per plant and 100-seed weight of soybean were reduced. The total yield of the four intercropping modes was higher than that of the single cropping soybean, and the difference between the total yield of the intercropping mode M₃S₃ and that of the single cropping millet was small. M₃S₃ treatment （Planting 3 rows of millet and 3 rows of soybean,the row spacing of millet is 25 cm, the plant space of millet is 10 cm, the row space of soyben is 40 cm, the plant space of millet is 14 cm） is a suitable cultivation method.

Key words: millet（Setaria italica）, soybean（Glycine max）, intercropping patterns, population structure