Family planning has far long been recognized as part of maternal and child health services. Various studies have provided evidence about the relationship between the occurrence timing and spacing of pregnancies on the one hand and the health of the mother and children on the other. The extent of acceptance of contraceptive methods still varies within and between societies and also among different castes and religion groups. The factors responsible for such varied picture operate at the individual, family and community levels with their roots in the socio-economic and cultural milieu of Indian society. To assess the level of knowledge of primi postnatal mothers and find the association between knowledge score of primi postnatal mothers regarding temporary family planning method with their selected demographic variables. Non experimental descriptive design was used, 30 samples were selected by purposive samples and techniques, structured interview schedule were used to gather the data. In this study 10(33.3%) were inadequate knowledge. 13(43.3%) were moderately adequate knowledge and few 7(23.3%) of mothers had adequate knowledge. Very few {7(23.3%)} had adequate knowledge and there is no significant association between the demographic variables and knowledge of primi postnatal mothers regarding temporary family planning method so they need health education regarding methods and importance of family planning.