Latar Belakang:Diare adalah buang air besar cair lebih dari tiga kali sehari, sering disebabkan oleh makanan, minuman, dan sanitasi yang buruk. Edukasi dan promosi kesehatan, khususnya pada anak sekolah, penting untuk mencegah diare dan meningkatkan perilaku hidup bersih, salah satu upaya yang dapat dilakukan adalah mencuci tangan pakai sabun. Tujuan :Untuk mengetahui hubungan antara perilaku cuci tangan pakai sabun (CTPS) dengan kejadian diare. Metode:penelitian ini mengunakan desain penelitian cross-sectional. Sampel yang digunakan berjumlah 120 responden yang diambil dengan menggunakan teknik non-probality. Pengumpulan data menggunakan kuesioner. Data dianalisis menggunakan uji Chi-Square. Hasil: Hasil menunjukan terdapat hubungan signifikan antara perilaku cuci tangan pakai sabun (CTPS) dengan kejadian diare di SD Negeri 6 Songan (pvalue= 0,001). Hasil uji statistik Chi-Square menunjukan p-value (0,001)

Background: Diarrhea is a condition where you have watery stools more than three times daily, often caused by contaminated food, drinks, and poor sanitation. Health education and promotion, especially in school children, are essential to prevent diarrhea and improve hygiene practices. One effort that can be done is handwashing with soap. The purpose of this study was to determine the correlation between the behavior of handwashing with soap and the occurrence of diarrhea in children at Elementary School 6 Songan. Method:This study employed a cross-sectional research design. In this study, 120 respondents were recruited as a sample using non-probability sampling. Data were collected using questionnaires and analyzed using the Chi-Square test. Results: Findings indicated a significant correlation between the behavior of handwashing with soap and the occurrence of diarrhea in children at Elementary School 6 Songan (p-value=0.001). The results of the Chi-Square statistical test showed a p-value (0.001)