The invention relates to a field rice planting middle-stage herbicide. The field rice planting middle-stage herbicide is prepared from, by weight, 35-45 parts of acetochlor, 35-45 parts of atrazine, 15-19 parts of radix polygoni multiflori, 6-9 parts of fried platycodon roots, 15-18 parts of scorch-fried bombyx batryticatus, 12-14 parts of bulbus fritillariae cirrhosae, 5-7 parts of scorch-fried pericarpium papaveris, 9-14 parts of pear peels, 30-50 parts of fructus momordicae, 50-60 parts of vinegar, 50-56 parts of straw, 10-15 parts of plant ash, 10-20 parts of sugar refinery filter mud, 1-2 parts of probiotics, 10-15 parts of diafenthiuron, 10-15 parts of methomyl, 10-15 parts of pyridaben, 10-15 parts of maibaosu, 60-70 parts of coprinus comatus, 80-90 parts of bean curds, 5-10 parts of ganoderma lucidum, 5-10 parts of salt, 5-10 parts of chicken essence, 5-10 parts of sesame oil, 200-210 parts of Ceylon black tea, 1,000-1,100 parts of boiled water, 100-110 parts of evaporated milk, 55-60 parts of white sugar, 20-25 parts of peanut kernels, 10-15 parts of milkvetch roots and 10-15 parts of radix angelicae sinensis. The prepared herbicide is specially used for removing field rice planting middle-stage weeds, the growth vigor of rice is not affected, the herbicide is dissolved in water and penetrates underground, and nutrition supply to the early-stage rice can be achieved.