A study was conducted to assess the knowledge and attitude of mothers regarding care of under five children in selected area of Byahatti PHC. Totally 25 mothers were selected by non probability convenient sampling technique. The knowledge was assessed by using structured interview schedule and attitude by using attitude scale. The results reveals that majority of the mothers 17 (68%) had average knowledge, 05 (20%) had good knowledge and 03 (12%) had poor knowledge. And majority of mothers 12 (48%) had negative attitude, 09 (36%) had favorable attitude and 04 (16%) had positive attitude towards care of under five children. Calculated value of Karl pearson’s coefficient of correlation value r = 0.575 is greater than table value (0.396),  Hence there is correlation between Knowledge and attitude of the mothers. The ÷2 value revealed that the gain in knowledge and socio demographic variables is independent. The study findings concluded that, the mothers of Byahatti village are having average knowledge (68%) and negative attitude (48%) regarding care of under- five children.