A method of breeding aphidius gifuensis in high-density, in a breeding cote the number of nutrition carriers is about 600 plants in per square meter area, 20 days after sowing and seedling, inoculating the tobacco aphid when the seedling is young, then another 10 days later, inoculating the aphidius gifuensis, about another 15 days apis appears. high-density breeding technology apis feeding cycle of the aphidius gifuensis is 45 days, which can reduce 50 days corresponding to individual apis feeding technology, the aphid feeding amount is 11.2 ten thousand/m[2], the benefit is improved 100.7%, the apis feeding amount is 2.8 ten thousand/m[2], the benefit is improved 60%.