ABSTRACT Hospitalization is a frightening situation for children. This is influenced by various factors including the age and stage of development of the child, previous experience of being treated, parental involvement and the attitude shown by the nurse during providing care. This study aims to identify the relationship between parents' participation and nurses' attitudes with children's hospitalization reactions in the children's room of Yarsi General Hospital Pontianak. The design used was descriptive with a cross-sectional approach. The sample involved in this study were 49 respondents who were selected by purposive sampling. Data collection used questionnaires of parental participation, atraumatic care and hospitalization stress. The data that has been collected was analyzed using the chi square test. The results showed that most parents had good participation (57.1%), good nurse attitude (71.4%) and positive hospitalization reaction (71.4%). The results of bivariate analysis showed that there was a relationship between parental participation (p=0.023) and nurse attitude (p=0.028) with hospitalization reactions. Parental participation and good nurse attitude can prevent negative reactions in children due to hospitalization. Keywords: Role of Parent, Nurse Attitude, Hospitalization Reaction ABSTRAK Hospitalisasi merupakan situasi yang menakutkan bagi anak. hal ini dipengaruhi oleh berbagai factor diantaranya usia dan tahap perkembangan anak, pengalaman dirawat sebelumnya, keterlibatan orangtua dan sikap yang ditunjukkan oleh perawat selama memberikan perawatan. Penelitian ini bertujuan untuk mengidentifikasi hubungan antara peran serta orangtua dan sikap perawat dengan reaksi hospitalisasi anak di ruang anak Rumah Sakit Umum Yarsi Pontianak. Desain yang digunakan adalah deskriptif dengan pendekatan cross-sectional. Sampel yang terlibat dalam penelitian ini sebanyak 49 responden yang dipilih secara purposive sampling. Pengumpulan data menggunakan kuesioner peran serta orangtua, atraumatic care dan stress hospitalisasi. Data yang telah terkumpul dianalisis menggunakan uji chi square.Hasil penelitian didapatkan Sebagian besar orangtua memiliki peran serta yang baik (57,1%), sikap perawat baik (71,4%) dan reaksi hospitalisasi positif (71,4%). Hasil analisis bivariat menunjukkan bahwa terdapat hubungan antara peran serta orangtua (p=0,023) dan sikap perawat (p=0,028) dengan reaksi hospitalisasi. Peran serta orangtua dan sikap perawat yang baik dapat mencegah terjadinya reaksi negatif pada anak akibat hospitalisasi. Kata Kunci: Peran Serta Orangtua, Sikap Perawat, Reaksi Hospitalisasi