Generally, maggots in tomatoes can be sprayed with 265,438+0% disinfectant emulsifiable concentrate (65,438+0,500-3,000 times) or 50% malathion emulsion (800 times), or 50 kilograms of fine soil can be mixed with 3 kilograms of 2.5% trichlorfon powder per mu, and then the medicinal soil is sprinkled on the top leaves and young leaves of tomato plants. Or it can be killed by artificial capture, that is, the cotton bollworm larvae are caught on the plants every morning.