Abstract: One of the best tests for assessment of fetus is biophysical profile test and performance of this has significant effects in fetus health and outcome of pregnancy. The aim of this study, is comparison of modified biophysical profile test with complete biophysical profile test. A cross-sectional and prospective analytical study that performed in Kosar hospital of Qazvin at 2004S, 600 high risk pregnant women of 15-45 years of ages that gestational age was >32 weeks were chosen for any patient both of test were performed and then sensitivity, specificity, positive and negative predictive value were compared together and then analyzed with statistics. Sensitivity in complete biophysical profile was 98.5% and in modified biophysical profile was 98.4%. Specificity in complete biophysical profile was 82.6% and in modified biophysical profile was 81.2%. Positive predictive value in complete biophysical profile was 99.7% and in modified biophysical profile was 99.7%. Modified biophysical profile test can be replaced for assessment of fetus health and outcome of pregnancy.