With the rapid development of urban rail transit and the desired improvement in the quality of people’s lives, environmental vibration and noise problems caused by urban rail transit have attracted increasing attention. This is one of the main problems faced by a subway after it begins operation. In order to solve the indoor noise problem in the subway building next to Zhujianglu Station of Nanjing Metro Line 1, remediation measures were taken in subway lines, including rail grinding and the replacement of vibration reduction nested fasteners. To evaluate the effect of this remediation, comparative tests were conducted on the tunnel wall vibration, indoor vibration, and noise before and after the implementation of the measures. The test results show that the vibration and noise levels within Zhujianglu Station and surrounding buildings are greatly reduced after remediation, and the remediation effect is obvious.