Abstract: The growth character of crofton weed in mixture transplanting with different green bristlegrass perennial ryegrass and Trifolium repens under different management conditions was studied. It was shown that effect of management for crofton weed by perennial ryegrass and Trifolium repens was more powerful under high fertility compare with middle and low fertility, but final effect of management for crofton weed by green bristlegrass was uniform under three conditions of high middle and low fertility, basically, croften weed was eliminated by green bristlegrass. It was concluded therefore that fertilization can be used to strengthen the competitive ability of perennial ryegrass and Trifolium repens with crofton weed, so crofton weed was restrained effectively.