Abstract: Measles is one of the five diseases which becomesa leading cause of child mortality in the world. Measles in East Java from 2014 to 2017 has increased from 762, 2367, 3913, to 4936 cases. The problem is that measles remains endemic in Indonesia and Indonesiahas poor quality of a Case-Based Measles Surveillance(CBMS) system implementation which leads to the lack of epidemiological information.Aim: This study purposes toevaluateCase-Based Measles Surveillance system in East Java Province in 2018 based on the attributes of simplicity, flexibility, data quality, acceptability, timeliness, representativeness, and stability.Method:This studywas a descriptive study which utilized a qualitative approach in analyzing the data.Result:The evaluation results of CBMS system implementedin East Java based on the following attributes were: simplicity (officer hadnever received any training and there wasonly one officer, thus the quality of the officerwas belowstandard),flexibility (no change), data quality (completeness only reached 16%), acceptability (regarding the implementation of CBMS by the district government, only 29% met the targets, 79% did not meet the targets, 5% did not implement CBMS, and no data from the hospitals or the private sectors), timeliness (on-time 5.7% ), representativeness (lack of accurate information), and stability (less reliable).Conclusion:The CMBS system implementedis complicated, less acceptable, less representative, less timeliness, and not stable.