Abstract: Weed survey was conducted by sampling methods of inverted W-pattern to the leafy vegetable fields with different planting time and management levels in Guangzhou region in spring. The results showed that 35 species belonging to 12 families and 25 genera were found among them. Portulaca oleracea, Eleusine indica, Echinochloa crusgali var.mitis, Cyperus iria, etc. were the main weeds. Weed community was mainly constituted of Eleusine indica + Portulaca oleracea + Polygonum aviculare in the fields with 5 years’ planting time; Portulaca oleracea + Echinochloa crusgali var.mitis + Cyperus iria in the fields with 10 years’ planting time and Portulaca oleracea + Cyperus iria + Amaranthus ascendens in the fields with long planting time. The Shannon-wiener index and Pielou index of weed community in fields with 5 years’ planting time were the largest. The smallest Riches index appeared in the fields with high management level (4.67). Clustering analysis showed planting time and management level were the main factors affecting weed community structure.