ObjectiveTo counsel the life style from the first trimester based on the fasting hyperglysemia to decrease the rate of GDM and adverse effect of it. MethodsThe pregnancy women with fasting hyperglysemia were recruited. All subjects were divided into two groups, one was counselled the life style from the first trimester but the other not. The pregnant outcome were compared. ResultsIn the study group 1 100 with complete information and 29 were abnormal glucose intolerance, 1 120 of 47 in control. The rate of GDM or GIGT,hypertensive disease,spontaneous abortion,premature dilivery, polyhydramnios, fetal macrosomia, fetal growth restriction, neonatal respiratory distress syndrome and the mean GHbA1c was lower than that in control ( x2 = 8.110,6.124,5.815,4.518,6.355,3.957,5.453,4.619, t = 3.385, all P ＜ 0. 05 ). But the body mass index at labor( t = 0.698 ), infection disease ( x2 =0.082),mean neonatal weight (t = 2.09 )and neonatal hypoglysemia (x2 = 0.035 )of term labor had no significant differences. ( t = 0.698, χ2 = 0.082,t = 2.090, χ2 = 0.035, all P ＞ 0.05 ). ConclusionCounseling the life style from the first trimester based on the fasting hyperglysemia could decrease the rate of GDM or GIGT and improve the pregnancy result.