PLACENTUM Jurnal Ilmiah Kesehatan dan Aplikasinya, Vol 9 (3) Special Issue December, 2021 1 Copyright © 2021, Placentum: Jurnal Ilmiah Kesehatan dan Aplikasinya, ISSN 2303-3746, e ISSN 2620-9969 The Effect of Education Breastfeeding to Breastfeeding Self Efficacy in Klaten, Central Java, Indonesia Aris Prastyoningsih 1* , Dheny Rohmantika 1 , Erinda Nur Pratiwi 1 , Ajeng Maharani 1 Amrina Nur Rohmah 2 a Midwifery Study Program, Faculty of Health Science Universitas Kusuma Husada, Jl. Jaya Wijaya No..11, Kadipiro, Kec. Banjarsari, Kota Surakarta, Jawa Tengah 57136, Indonesia b Midwifery Study Program, Universitas Muhammadiyah Lamongan. Jl. Plalangan KM 03, Plosowahyu, Kec. Lamongan, Kabupaten Lamongan, Jawa Timur 62218 * Corresponding author E-mail: aris.prastyoningsih@gmail.com ABSTRACT The low coverage of exclusive breastfeeding is influenced by several internal factors. Breastfeeding Self-efficacy can be increased through knowledge, skills about breastfeeding. Efforts to build knowledge and skills of mothers in breastfeeding can be done through breastfeeding education. This study aims to determine the effect of providing breastfeeding education with booklets on the breastfeeding self-efficacy in post-partum mothers in Klaten, Central Java, Indonesia. This research is quantitative research with one group pretest - post test design. This research was conducted at 2 independent midwifery in Klaten on July to September 2020. Sampling technique used was purposive sampling with inclusion criteria. Statistical analysis used Univariate analysis and Bivariate analysis using paired t-test. There was a significant increase in the mean breastfeeding self-efficacy before and after breastfeeding education with booklets with a significant (p value < 0,05) There is the effect of breastfeeding education with a booklet on self-efficacy of breastfeeding on postpartum mother. Education breastfeeding can be used by midwives or health promotion to educate pregnant women and post-partum mothers to increase self-efficacy to support the successful of exclusive breastfeeding. Keywords: Education; Breastfeeding; Self Efficacy INTRODUCTION The success of exclusive breastfeeding greatly supports the success of the government program on 1000 first day of birth. The low coverage of exclusive breastfeeding is a reflection of the failure of breastfeeding caused by several factors. One of the factors that determine the success of breastfeeding is the mother's own condition, such as her self-confidence or confidence in breastfeeding. Dennis states that the self- efficacy of breastfeeding is a mother's self- confidence in her ability to breastfeed or provide exclusive breastfeeding to her baby (1) . Breastfeeding self-efficacy is a major factor for initiating breastfeeding, duration