Pregnant woman has to take special care during pregnancy and childbirth. In developing countries death rate is very high. Objectives of the Study-1.To assess the knowledge regarding warning signs during pregnancy and their management among Primigravida mothers of first trimester.2.To find out the association between knowledge scores regarding warning signs of pregnancy among Primigravida mothers of first trimester and selected demographic variables.3.To develop and validate information booklet on warning signs of pregnancy. Methodology-evaluative approach was adopted with descriptive research design. Data was collected from 80 sample selected with purposive sampling technique. Structures knowledge questionnaire schedule was tool of data collection. Result-30% (24) Primigravida mothers of first trimester had poor knowledge, 52.50% (42) had average knowledge and 17.86% (14) found to have good knowledge. Overall maximum score was of 30 and overall mean score; median, mean% and SD were 15.93, 16, 60.90% and 3.73 respectively. Demographic variables family income and occupation status had a significant association with knowledge level of primigravida mothers. Conclusion- Maximum mothers 52.50% (42) had average knowledge and education regarding warning signs and their management during pregnancy.