The findings reveled that majority of the mothers 14 (46.67%) were in the age group of 21-23 years, and 16 (53.33%) belongs to Hindu religion. Majority of the mothers from 21 (70%) were nuclear families. The sample was distributed in terms of education, as majority of mothers 13(43.33%) were higher school education. Majority of the mothers 12(40%) were housewives, regarding monthly family income, most of the mothers 30(100%) were belongs to rural area. Most of the mothers 28(93.33%) were comes under unknown group of previous knowledge. The results showed a marked improvement in posttest knowledge scores compared to pretest knowledge scores. Pretest scores indicated that about 8 (26.67%) of the mothers obtained below average (0-33%) scores and 22(73.33%) obtained average (34-66%) and above average knowledge level in pretest were found nil. But, it was very encouraging to note that their scores improved significantly in posttest after structure teaching. In the post test most of the mothers 26(86.67%) obtained above scores 22(73.33%) obtained average scores in pretest, and none of the mothers obtained below average score in posttest. The obtained' value was15.83.which was higher than the table 't' value of 2.0452 at 29df with 0.05 level of significance. It shows that there is significant difference (p<0.05) in pretest and posttest knowledge scores. Comparison of the pretest and posttest knowledge score regarding prevention of puerperal infections, which were obtained 't' value was 15.83 which was significant at 0.05 level of significance at 29 degrees of freedom.