The invention discloses a high-efficiency weed control method which comprises the following steps: 1) soil preparation; 2) spreading materials; 3) turning over; 4) irrigating with enough water, namelyperforming broad irrigation until water is seen on the surface; 5) covering the mulching film, namely selecting a whole mulching film to achieve rapid covering after irrigating with enough water, pressing soil blocks at the periphery, and forming a relatively closed environment; 6) closing the film; and 7) uncovering the film, airing, and seeding landscape flower seeds. Compared with the traditional weed control method, the method disclosed by the invention is simple, low in cost and easy to popularize. The organic fertilizer is thoroughly decomposed by utilizing a high temperature, the planting risk is reduced, the soil fertility is increased, the grass seeds are killed, the weeds are effectively controlled, and a good growth environment is provided for subsequent plant growth. Accordingto the method disclosed by the invention, any chemical herbicide is hardly used subsequently, manual weeding is not needed, the input cost is reduced, drug-resistant weeds can be effectively controlled, the drug resistance of the weeds is delayed, and green and sustainable control of the weeds is facilitated.