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Adolescence is a stage in human life which is often referred to as puberty. And of the various characteristics of puberty, menarche is a fundamental difference between pubertal male and female puberty. Method: The research design was pre eksperimental design. With the approach of one group pretest-posttest design. The sample are 100 student of SMPN 1 Blitar City, it was choosen using simple random sampling technique. The data was collected by questionnaire. Result : Based on statistical testsdoi:10.26699/jnk.v1i3.art.p196-199 fatcat:f6o6dregqvaitgcmnmwzvogr6i