This study aims at investigating the relationships between supportive attitude of probation officers toward criminals and the revocation of probation. In particular, the current study focuses on identifying crucial factors that are associated with the violations of probation conditions under electronic monitoring. It is significant to find out the key factors that might reduce the numbers of violation of EM conditions in order to prevent recidivism in South Korea. In 2022, Korean Ministry of Justice announced the additional implementation of electronic anklets device program on offenders who committed stalking with a partial revision of the Electronic Monitoring Device Attachment Act. There have been wide controversial criticism toward the expansion of the Electronic Monitoring Device Attachment Act from September 2008, which the law was uninitiated. In this regard, this study attempts to examine what factors can increase the effectiveness of the EM with the consideration of supportive attitude of officers in terms of reduction of violations of probation conditions under electronic monitoring. In addition, the present study highlights the association between the role of probation officers and the level of probation revocation. “Survey of the Operational Realities of Electronic Monitoring on Sex-offenders in 2013” was used as analyses data sets. Besides, this study relied on Sherman's Defiance theory(1993) to examine the relationships between the attitude of probation officers and violation of probationers under EM. After reviewing previous studies, related factors were analyzed by assigning key dependent variables such as violation of probation conditions and violation of electronic monitoring requirement. In addition, this study utilized independent variable as supportive attitude of probation officers. Furthermore, as control variables, age, educational background, criminal experience, and period of attachment to electronic devices were used in the model. Logistic regression analysis result demonstrated that EM attachment period and previous criminal history of offenders had a significant impact on increasing the violation of probation conditions. Regression analysis showed that probationer-officer relationship was not statistically significant factors that might decrease the number of violation of condition when other variables were controlled. These results showed that the compassionate attitude of the probation officer was not a significant factor for obtaining better compliance of offenders under EM. Further policy implications will be discussed.