The invention provides herbicide used in the middle period of field wheat planting. The herbicide is prepared from, by weight, 35-45 parts of acetochlor, 35-45 parts of atrazine, 15-19 parts of roasted flos farfarae, 6-9 parts of stir-fried radix platycodonis, 15-18 parts of cortex acanthopanacis, 12-14 parts of bulbus fritillariae cirrhosae, 5-7 parts of roasted pericarpium papaveris, 9-14 parts of pericarp of bretschneider pear, 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 filter mud from a sugar refinery, 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 dictyophora indusiata (Vent.ex Pers.)Fisch. mushroom, 80-90 parts of Chinese dates, 5-10 parts of gallus gallus domesticus brisson, 5-10 parts of salt, 5-10 parts of chicken extract, 5-10 parts of sesame oil, 200-210 parts of ceylon tea, 1000-1100 parts of boiled water, 100-110 parts of evaporated milk, 55-60 parts of white sugar, 20-25 parts of groundnut kernels, 10-15 parts of radix astragali and 10-15 parts of radix angelica sinensis. The prepared herbicide is professionally used for removing weeds in the middle period of field corn, the upward trend of the corn is not influenced, meanwhile the herbicide is permeated into the ground after being dissolved in water, and nutrient supply to the corn in the middle period can be further achieved.