The utility model discloses a waterproof on -line monitoring system that floods of low lying areas power equipment, it includes the water level line of induction, water level alarm control ware, the GPRS transmission unit, external antenna, receive alarm mobile phone terminal and power supply unit, perpendicular setting of water level line of induction and outside are equipped with protective case, the water level line of induction is connected to water level alarm control ware, the collection of water level alarm control ware comes from the alarm information of water level line of induction and transmits the transmission unit to GPRS with alarm information, the GPRS transmission unit passes through external antenna with the alarm information conveying to receiving the alarm mobile phone terminal, the power supply unit provides the power for water level alarm control ware and GPRS transmission unit. The utility model discloses reduce the daily tour work load of fortune dimension teamsand groups, realized real -time grasp low lying areas power equipment ponding situation, realized prescient maintenance and processing.