The invention discloses a transformer station information monitoring system and method based on EMS fault warning, and the system comprises a transformer station (1), an EMS server first district (3), an EMS server third district (5), an EMS server fourth district (7), and cellphone APP software terminals (10-13). The transformer station (1) is connected with a transformer station information monitor (2) through a public network, and the EMS server first district (3) and the EMS server third district (5) are connected through a positive physical isolator (4). The EMS server third district (5) and the EMS server fourth district (7) are connected through a firewall (6). The system can timely achieve signal sharing and pooling of the wisdom and efforts of everyone and solve a problem in the first time when a troublesome and complex monitoring signal is met. A principal at a regulation and control center obtains the operation conditions of a power grid in the first time, thereby facilitating the safe dispatching of the power grid. The system achieves the technological change of information monitoring, greatly improves the work mode of power grid monitoring, and improves the work efficiency.