【Background】Various effect of Solenopsis invicta Buren invasion on native species may happen, and its impact on crops was worth concerning, and the data obtained could provide the information for assessing the economic damage of the fire ants accurately. 【Method】The effects of S.invicta to the corn and mung bean seed germination were studied using laboratory testing and field experiment. 【Result】There were no effects of laboratory colonies of S.invicta on the germination of Zea mays and Vigna radiate seeds. However, the high density of S.invicta had significantly effects on the germination of Z.mays seeds. The number of seeds that failed to germinate per row increased 2.86 times. Additionally, the density of S.invicta had significantly effects on the germination of V.radiate seeds in the field. The number of damaged seeds per row increased by 1.21 times in low ant density and 0.98 times in high ant density. 【Conclusion and significance】S.invicta has significant negative effects on the germination of Z.mays and V.radiate seeds, leading to direct loss of crops. The results were good for understanding the impacts of the fire ant invasion on the crops.