At present, there are several main problems in corn breeding in northeast China: lack of germplasm resources, relatively low level of breeding, poor density tolerance, slow precipitation of ear seeds, no resistance to diseases and pests, poor quality of commodities, poor lodging resistance, and unsuitable for harvest. In this paper, the problems of maize breeding in northeast China, the countermeasures, the selection of breeding materials, the introduction and innovation of germplasm resources, the selection methods, hybrid model and so on were discussed for reference.