The invention discloses a method for preventing and controlling tomato spotted wilt viruses. The method comprises the steps: cultivating tomatoes in a sunlight greenhouse according to large and smallrows, wherein a large row spacing is 80 cm, and a small row spacing is 60 cm; transplanting collards within 10-12 days before the tomatoes are planted, planting a row of collards between small rows ofa planting row, wherein the row spacing is 25 cm; carrying out plug seedling on the collards by using a substrate containing carbonized rice hulls, additionally applying the carbonized rice hulls into planting pits, and dipping plug trays and irrigating roots by using a dinetofuran liquid; and before transplanting the collards, sealing a ventilation opening of the sunlight greenhouse by using a 40-mesh insecticidal protection net. By using the method, the incidence rate of the tomato spotted wilt viruses can be effectively reduced on the premises that the dosage of a chemical pesticide is greatly reduced and the non-contact chemical prevention and control of main cultivated crops are realized, and generally, the incidence rate of the spotted wilt viruses of susceptible tomato varieties can be controlled within 5%.