Abstract: Objective To explore the effect of health education based on the model of behavioral change theory on the quality management and pregnancy outcome of pregnant women. Methods Eighty-four cases of pregnant women who were treated in our hospital from August, 2012 to July, 2015 were randomly divided into study group and control group, 42 cases in each group. The control group carried out routine nursing intervention, while the research group introduced the health education based on the model of behavioral change theory on the basis of the control group. Two groups of pregnant women before and after intervention were recorded in the tenth week for the specific behavior of the transition phase, comparing pregnancy outcome and body quality control between the two groups. Results In the study group, the qualified rate of body mass during the pregnancy was 78. 6% (33/42), higher than the control group which is 50. 0% (21/42), and the difference was statistically significant (P < 0. 05). There was no significant difference between the two groups before and after intervention (P > 0. 05); the proportion of pregnant women in the period of operation and maintenance period was23. 8% (10/42) and 31% (13/42), respectively, 14. 3% (6/42) and 11. 9% (5/42), thus the difference was statistically significant (P < 0. 05). The natural labor rate and normal children in the study group were significantly higher than those in the control group, and the difference was statistically significant (P < 0. 05), and the rate of cesarean section and the rate of birth rate were significantly lower than those in the control group, and the difference was statistically significant (P < 0. 05). Conclusion Applying health education strategy based on behavioral change theory to pregnant women can help to establish correct and healthy behavior, and can improve the qualified rate of body mass of pregnant women, and can improve the pregnancy outcome.