Abstract: In recent years，with continuous adjustment of agricultural industrial structure in Langfang city，planting area of corn has been decreasing.In addition，because of irrational use of cultivation techniques and pesticides，occurrence of corn diseases and pests was becoming more and more serious，which seriously threatende the yield and quality of corn.Cultivation techniques，prevention and control measures of common diseases and pests of corn in Langfang city were introduced in order to help farmers increase their output and income.