Pregnancy is a normal physiological process and not a disease. High risk pregnancy is a condition that may be present before and in pregnancy. Specific factors that might contribute to a high risk pregnancy include advanced maternal age, anemia, lifestyle choices, gestational diabetes, antepartum haemorrhage and hypertension that leads to postnatal complications-hemorrhage, puerperal sepsis, Perineal injuries and eclampsia. The main aim of the study was to enhance the knowledge regarding postnatal complications among high risk antenatal mothers by providing structured teaching programme in order to improve the maternal health. For this study Quasi Experimental research design was used. The study was conducted on purposively selected 60 high risk antenatal mothers attending antenatal outpatient department at selected hospitals of Jalandhar, Punjab. Data was collected by Socio-demographic variables and Structured Knowledge Interview Schedule. Collected data was analyzed by descriptive and inferential statistics. Tables and Bar diagrams were used to depict the findings. The pretest mean knowledge score in control group and experimental group was 16.8 and 16.93 respectively whereas the posttest mean knowledge score in control group and experimental group was 16.53 and 23.17 respectively. The difference of pretest posttest mean knowledge score of high risk antenatal mothers in control group was nonsignificant whereas it was statistically significant in experimental group. The tcal 0.2407 < ttab 1.96 in control group whereas in experimental group tcal 5.8433 < ttab 1.96. So the difference of posttest mean knowledge score of experimental group was statistically significant at p < 0.05 level. Thus, it indicated that structured teaching programme had significant impact on knowledge regarding postnatal complications among high risk antenatal mothers in experimental group. In this study association between posttest knowledge regarding postnatal complications among high risk antenatal mothers in experimental group with occupation.