Maize inbred line JiV022 was developed from Volga, a European maize germplasm. Through six successive generations of selfing in north China and Hainan. The genetic basis of maize germplasm was broadened. It is a good maize inbred line with high combining ability, early maturity, close planting tolerance, good comprehensive resistance and wide adaptability. The new maize varities, Jidan505, Jidan 517, Jidan 519 and Jidan 535, were selected and widely used in maize production.