Abstract: The agrometeorological conditions of spring maize during whole growth period in Lihe area in 2014 had significant characteristic. The temperature difference was big during filling and ripening stage, and sunshine was abundant. The temperature was low during seedling stage and the maize growth delayed, but the temperature during middle-later stage made up to the early temperature. the little lower temperature during middle-later stage and the well-distributed precipitation inhibited the development of starscream,which reduced the harm to increase maize yield.