The objectives of our study were to describe clinical signs, cardiotocography, and the pH value of cord blood samples to determine the outcome of pregnancies with meconium - stained amniotic fluid (MSAF). Result: of the number of MSAF samples collected, 65.7 percent were postdate pregnancies, 32.6 percent had abnormal cardiotocography, the average pH value of cord blood samples was .7.20 + or - 0.09, the rate of acidosis was 6.7 percent, and 52.4 percent of the these pregnancies required C-section. Both type 2 of CTG with thick-meconium and type 3 of CTG in MSAF group are two models that predict the acidosis of the babies with MSAF. In conclusion, MSAF is one of abnormal, alarming signs during labor, so women with this should be closely followed. Those with type 3-CTG, or type 2-CTG with thick-meconium should receive labor termination immediately.