Based on the comparative analysis of the production cost and income of corn from 2003 to 2016 in Hebei Province,the results showed high yield,low efficiency,low price and disordered production were the main factors influencing the development of corn industry. The proportion of total cost structure of corn production changed significantly in different years. Material and service fee fluctuate downward trend development,labor costs and land costs have different degrees of growth trend development. In additio...