Abstract: The effect of increasing temperature and the heat potential of sequential cropping in,solar greenhouse were studied．The results show that the annual active accumulated temperature in．solar greenhouse is 2205．3℃ higher than that outside；four crops a year by interplanting cool-season crops with warm-season crops or by sequential planting cool-season crops，and three crops a year by sequential planting warm-season crops can be harvested in,solar greenhouse．The heat potential of the sequential cropping will be more higher if growing and transplanting seedlings are used in solar greenhouse．