The invention discloses a bank power grid intelligent monitoring system comprising a client, a server, a database and an external integrated system. A warning threshold of each piece of performance data, anomaly time, warning manner and warning receiver information are set for a bank power system main unit through the client. The server receives the warning thresholds, the anomaly time, the warning manner and the warning receiver information and transmits them to the database for storage. The performance data of the bank power system main unit is collected in real time, failure warning is performed by means of threshold judgment, and the external integrated system is controlled according to the warning manner and the warning receiver information to send a warning message to a warning receiver. Real-time traction data of the bank power system main unit is collected. Historical transaction data stored in the database are collected; a transaction peak of next month is predicted according to the historical transaction data. By the use of the bank power grid intelligent monitoring system, the problem that the existing bank power system lacks failure warning and transaction peak prediction is solved.